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Merge pull request #6766 from jamtur01/clirun

Formatting and consistency fixes to CLI and RUN references

James Turnbull authored on 2014/06/30 21:21:57
Showing 2 changed files
... ...
@@ -199,26 +199,26 @@ To kill the container, use `docker kill`.
199 199
       --rm=true            Remove intermediate containers after a successful build
200 200
       -t, --tag=""         Repository name (and optionally a tag) to be applied to the resulting image in case of success
201 201
 
202
-Use this command to build Docker images from a Dockerfile
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-and a "context".
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-
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-The files at `PATH` or `URL` are called the "context" of the build. The build
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-process may refer to any of the files in the context, for example when using an
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-[*ADD*](/reference/builder/#dockerfile-add) instruction. When a single Dockerfile is
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-given as `URL` or is piped through STDIN (`docker build - < Dockerfile`), then
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-no context is set.
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-
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-When a Git repository is set as `URL`, then the
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-repository is used as the context. The Git repository is cloned with its
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-submodules (git clone –recursive). A fresh git clone occurs in a
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-temporary directory on your local host, and then this is sent to the
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-Docker daemon as the context. This way, your local user credentials and
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-vpn's etc can be used to access private repositories.
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-
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-If a file named ``.dockerignore`` exists in the root of ``PATH`` then it is
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-interpreted as a newline-separated list of exclusion patterns. Exclusion
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-patterns match files or directories relative to ``PATH`` that will be excluded
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-from the context. Globbing is done using Go's
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+Use this command to build Docker images from a Dockerfile and a
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+"context".
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+
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+The files at `PATH` or `URL` are called the "context" of the build. The
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+build process may refer to any of the files in the context, for example
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+when using an [*ADD*](/reference/builder/#dockerfile-add) instruction.
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+When a single Dockerfile is given as `URL` or is piped through `STDIN`
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+(`docker build - < Dockerfile`), then no context is set.
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+
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+When a Git repository is set as `URL`, then the repository is used as
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+the context. The Git repository is cloned with its submodules (`git
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+clone -recursive`). A fresh `git clone` occurs in a temporary directory
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+on your local host, and then this is sent to the Docker daemon as the
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+context.  This way, your local user credentials and VPN's etc can be
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+used to access private repositories.
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+
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+If a file named `.dockerignore` exists in the root of `PATH` then it
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+is interpreted as a newline-separated list of exclusion patterns.
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+Exclusion patterns match files or directories relative to `PATH` that
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+will be excluded from the context. Globbing is done using Go's
222 222
 [filepath.Match](http://golang.org/pkg/path/filepath#Match) rules.
223 223
 
224 224
 See also:
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@@ -304,15 +304,14 @@ and the tag will be `2.0`
304 304
 
305 305
     $ sudo docker build - < Dockerfile
306 306
 
307
-This will read a Dockerfile from STDIN without
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-context. Due to the lack of a context, no contents of any local
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-directory will be sent to the `docker` daemon. Since
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-there is no context, a Dockerfile `ADD`
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-only works if it refers to a remote URL.
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+This will read a Dockerfile from `STDIN` without context. Due to the
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+lack of a context, no contents of any local directory will be sent to
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+the Docker daemon. Since there is no context, a Dockerfile `ADD` only
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+works if it refers to a remote URL.
312 311
 
313 312
     $ sudo docker build - < context.tar.gz
314 313
 
315
-This will build an image for a compressed context read from STDIN.
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+This will build an image for a compressed context read from `STDIN`.
316 315
 Supported formats are: bzip2, gzip and xz.
317 316
 
318 317
     $ sudo docker build github.com/creack/docker-firefox
... ...
@@ -518,7 +517,7 @@ by default.
518 518
 
519 519
 ### Filtering
520 520
 
521
-The filtering flag (-f or --filter) format is of "key=value". If there are more
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+The filtering flag (`-f` or `--filter`) format is of "key=value". If there are more
522 522
 than one filter, then pass multiple flags (e.g. `--filter "foo=bar" --filter "bif=baz"`)
523 523
 
524 524
 Current filters:
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@@ -562,11 +561,10 @@ NOTE: Docker will warn you if any containers exist that are using these untagged
562 562
 
563 563
     Create an empty filesystem image and import the contents of the tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) into it, then optionally tag it.
564 564
 
565
-URLs must start with `http` and point to a single
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-file archive (.tar, .tar.gz, .tgz, .bzip, .tar.xz, or .txz) containing a
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-root filesystem. If you would like to import from a local directory or
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-archive, you can use the `-` parameter to take the
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-data from STDIN.
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+URLs must start with `http` and point to a single file archive (.tar,
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+.tar.gz, .tgz, .bzip, .tar.xz, or .txz) containing a root filesystem. If
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+you would like to import from a local directory or archive, you can use
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+the `-` parameter to take the data from `STDIN`.
570 569
 
571 570
 ### Examples
572 571
 
... ...
@@ -578,7 +576,7 @@ This will create a new untagged image.
578 578
 
579 579
 **Import from a local file:**
580 580
 
581
-Import to docker via pipe and STDIN.
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+Import to docker via pipe and `STDIN`.
582 582
 
583 583
     $ cat exampleimage.tgz | sudo docker import - exampleimagelocal:new
584 584
 
... ...
@@ -681,7 +679,7 @@ contains complex json object, so to grab it as JSON, you use
681 681
 
682 682
       -s, --signal="KILL"    Signal to send to the container
683 683
 
684
-The main process inside the container will be sent SIGKILL, or any
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+The main process inside the container will be sent `SIGKILL`, or any
685 685
 signal specified with option `--signal`.
686 686
 
687 687
 ## load
... ...
@@ -739,8 +737,8 @@ The `docker logs` command batch-retrieves all logs
739 739
 present at the time of execution.
740 740
 
741 741
 The ``docker logs --follow`` command will first return all logs from the
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-beginning and then continue streaming new output from the container's stdout
743
-and stderr.
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+beginning and then continue streaming new output from the container's `STDOUT`
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+and `STDERR`.
744 744
 
745 745
 ## port
746 746
 
... ...
@@ -1074,7 +1072,7 @@ This will create and run a new container with the container name being
1074 1074
 
1075 1075
 The `--link` flag will link the container named `/redis` into the newly
1076 1076
 created container with the alias `redis`. The new container can access the
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-network and environment of the redis container via environment variables.
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+network and environment of the `redis` container via environment variables.
1078 1078
 The `--name` flag will assign the name `console` to the newly created
1079 1079
 container.
1080 1080
 
... ...
@@ -1087,19 +1085,19 @@ optionally suffixed with `:ro` or `:rw` to mount the volumes in read-only
1087 1087
 or read-write mode, respectively. By default, the volumes are mounted in
1088 1088
 the same mode (read write or read only) as the reference container.
1089 1089
 
1090
-The `-a` flag tells `docker run` to bind to the container's stdin, stdout or
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-stderr. This makes it possible to manipulate the output and input as needed.
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+The `-a` flag tells `docker run` to bind to the container's `STDIN`, `STDOUT` or
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+`STDERR`. This makes it possible to manipulate the output and input as needed.
1092 1092
 
1093 1093
     $ echo "test" | sudo docker run -i -a stdin ubuntu cat -
1094 1094
 
1095 1095
 This pipes data into a container and prints the container's ID by attaching
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-only to the container'sstdin.
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+only to the container's `STDIN`.
1097 1097
 
1098 1098
     $ sudo docker run -a stderr ubuntu echo test
1099 1099
 
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-This isn't going to print anything unless there's an error because We've
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-only attached to the stderr of the container. The container's logs still
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-   store what's been written to stderr and stdout.
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+This isn't going to print anything unless there's an error because we've
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+only attached to the `STDERR` of the container. The container's logs
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+still store what's been written to `STDERR` and `STDOUT`.
1103 1103
 
1104 1104
     $ cat somefile | sudo docker run -i -a stdin mybuilder dobuild
1105 1105
 
... ...
@@ -5,13 +5,13 @@ page_keywords: docker, run, configure, runtime
5 5
 # Docker Run Reference
6 6
 
7 7
 **Docker runs processes in isolated containers**. When an operator
8
-executes `docker run`, she starts a process with its
9
-own file system, its own networking, and its own isolated process tree.
10
-The [*Image*](/terms/image/#image-def) which starts the process may
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-define defaults related to the binary to run, the networking to expose,
12
-and more, but `docker run` gives final control to
13
-the operator who starts the container from the image. That's the main
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-reason [*run*](/reference/commandline/cli/#cli-run) has more options than any
8
+executes `docker run`, she starts a process with its own file system,
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+its own networking, and its own isolated process tree.  The
10
+[*Image*](/terms/image/#image-def) which starts the process may define
11
+defaults related to the binary to run, the networking to expose, and
12
+more, but `docker run` gives final control to the operator who starts
13
+the container from the image. That's the main reason
14
+[*run*](/reference/commandline/cli/#cli-run) has more options than any
15 15
 other `docker` command.
16 16
 
17 17
 ## General Form
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@@ -36,10 +36,10 @@ The list of `[OPTIONS]` breaks down into two groups:
36 36
 2. Setting shared between operators and developers, where operators can
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    override defaults developers set in images at build time.
38 38
 
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-Together, the `docker run [OPTIONS]` give complete
40
-control over runtime behavior to the operator, allowing them to override
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-all defaults set by the developer during `docker build`
42
-and nearly all the defaults set by the Docker runtime itself.
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+Together, the `docker run [OPTIONS]` give complete control over runtime
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+behavior to the operator, allowing them to override all defaults set by
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+the developer during `docker build` and nearly all the defaults set by
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+the Docker runtime itself.
43 43
 
44 44
 ## Operator Exclusive Options
45 45
 
... ...
@@ -54,10 +54,8 @@ following options.
54 54
      - [PID Equivalent](#pid-equivalent)
55 55
  - [Network Settings](#network-settings)
56 56
  - [Clean Up (--rm)](#clean-up-rm)
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- - [Runtime Constraints on CPU and
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-    Memory](#runtime-constraints-on-cpu-and-memory)
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- - [Runtime Privilege and LXC
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-    Configuration](#runtime-privilege-and-lxc-configuration)
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+ - [Runtime Constraints on CPU and Memory](#runtime-constraints-on-cpu-and-memory)
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+ - [Runtime Privilege and LXC Configuration](#runtime-privilege-and-lxc-configuration)
61 59
 
62 60
 ## Detached vs Foreground
63 61
 
... ...
@@ -78,28 +76,28 @@ container in the detached mode, then you cannot use the `--rm` option.
78 78
 
79 79
 ### Foreground
80 80
 
81
-In foreground mode (the default when `-d` is not specified), `docker run`
82
-can start the process in the container and attach the console to the process's
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-standard input, output, and standard error. It can even pretend to be a TTY
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-(this is what most command line executables expect) and pass along signals. All
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-of that is configurable:
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+In foreground mode (the default when `-d` is not specified), `docker
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+run` can start the process in the container and attach the console to
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+the process's standard input, output, and standard error. It can even
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+pretend to be a TTY (this is what most command line executables expect)
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+and pass along signals. All of that is configurable:
86 86
 
87
-    -a=[]           : Attach to ``stdin``, ``stdout`` and/or ``stderr``
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+    -a=[]           : Attach to `STDIN`, `STDOUT` and/or `STDERR`
88 88
     -t=false        : Allocate a pseudo-tty
89 89
     --sig-proxy=true: Proxify all received signal to the process (even in non-tty mode)
90 90
     -i=false        : Keep STDIN open even if not attached
91 91
 
92
-If you do not specify `-a` then Docker will [attach everything (stdin,stdout,stderr)](
93
-https://github.com/dotcloud/docker/blob/
94
-75a7f4d90cde0295bcfb7213004abce8d4779b75/commands.go#L1797). You can specify to which
95
-of the three standard streams (`stdin`, `stdout`, `stderr`) you'd like to connect
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-instead, as in:
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+If you do not specify `-a` then Docker will [attach all standard
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+streams]( https://github.com/dotcloud/docker/blob/
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+75a7f4d90cde0295bcfb7213004abce8d4779b75/commands.go#L1797). You can
95
+specify to which of the three standard streams (`STDIN`, `STDOUT`,
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+`STDERR`) you'd like to connect instead, as in:
97 97
 
98 98
     $ docker run -a stdin -a stdout -i -t ubuntu /bin/bash
99 99
 
100
-For interactive processes (like a shell) you will typically want a tty as well as
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-persistent standard input (`stdin`), so you'll use `-i -t` together in most
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-interactive cases.
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+For interactive processes (like a shell) you will typically want a tty
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+as well as persistent standard input (`STDIN`), so you'll use `-i -t`
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+together in most interactive cases.
103 103
 
104 104
 ## Container Identification
105 105
 
... ...
@@ -113,19 +111,18 @@ The operator can identify a container in three ways:
113 113
 -   Name ("evil_ptolemy")
114 114
 
115 115
 The UUID identifiers come from the Docker daemon, and if you do not
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-assign a name to the container with `--name` then
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-the daemon will also generate a random string name too. The name can
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-become a handy way to add meaning to a container since you can use this
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-name when defining
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-[*links*](/userguide/dockerlinks/#working-with-links-names)
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-(or any other place you need to identify a container). This works for
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-both background and foreground Docker containers.
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+assign a name to the container with `--name` then the daemon will also
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+generate a random string name too. The name can become a handy way to
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+add meaning to a container since you can use this name when defining
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+[*links*](/userguide/dockerlinks/#working-with-links-names) (or any
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+other place you need to identify a container). This works for both
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+background and foreground Docker containers.
123 122
 
124
-### PID Equivalent 
123
+### PID Equivalent
125 124
 
126
-And finally, to help with automation, you can have Docker write the
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+Finally, to help with automation, you can have Docker write the
127 126
 container ID out to a file of your choosing. This is similar to how some
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-programs might write out their process ID to a file (you`ve seen them as
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+programs might write out their process ID to a file (you've seen them as
129 128
 PID files):
130 129
 
131 130
     --cidfile="": Write the container ID to the file
... ...
@@ -141,14 +138,14 @@ PID files):
141 141
 
142 142
 By default, all containers have networking enabled and they can make any
143 143
 outgoing connections. The operator can completely disable networking
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-with `docker run --net none` which disables all incoming and
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-outgoing networking. In cases like this, you would perform I/O through
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-files or STDIN/STDOUT only.
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+with `docker run --net none` which disables all incoming and outgoing
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+networking. In cases like this, you would perform I/O through files or
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+`STDIN` and `STDOUT` only.
147 147
 
148 148
 Your container will use the same DNS servers as the host by default, but
149 149
 you can override this with `--dns`.
150 150
 
151
-Supported networking modes are: 
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+Supported networking modes are:
152 152
 
153 153
 * none - no networking in the container
154 154
 * bridge - (default) connect the container to the bridge via veth interfaces
... ...
@@ -156,35 +153,40 @@ Supported networking modes are:
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 * container - use another container's network stack
157 157
 
158 158
 #### Mode: none
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-With the networking mode set to `none` a container will not have a access to 
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-any external routes.  The container will still have a `loopback` interface 
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-enabled in the container but it does not have any routes to external traffic.
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+
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+With the networking mode set to `none` a container will not have a
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+access to any external routes.  The container will still have a
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+`loopback` interface enabled in the container but it does not have any
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+routes to external traffic.
162 164
 
163 165
 #### Mode: bridge
164
-With the networking mode set to `bridge` a container will use docker's default
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-networking setup.  A bridge is setup on the host, commonly named `docker0`, 
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-and a pair of veth interfaces will be created for the container.  One side of 
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-the veth pair will remain on the host attached to the bridge while the other 
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-side of the pair will be placed inside the container's namespaces in addition 
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-to the `loopback` interface.  An IP address will be allocated for containers 
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-on the bridge's network and trafic will be routed though this bridge to the
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-container.
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+
167
+With the networking mode set to `bridge` a container will use docker's
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+default networking setup.  A bridge is setup on the host, commonly named
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+`docker0`, and a pair of `veth` interfaces will be created for the
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+container.  One side of the `veth` pair will remain on the host attached
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+to the bridge while the other side of the pair will be placed inside the
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+container's namespaces in addition to the `loopback` interface.  An IP
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+address will be allocated for containers on the bridge's network and
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+traffic will be routed though this bridge to the container.
172 175
 
173 176
 #### Mode: host
177
+
174 178
 With the networking mode set to `host` a container will share the host's
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-network stack and all interfaces from the host will be available to the 
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-container.  The container's hostname will match the hostname on the host 
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-system.  Publishing ports and linking to other containers will not work 
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-when sharing the host's network stack.  
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+network stack and all interfaces from the host will be available to the
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+container.  The container's hostname will match the hostname on the host
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+system.  Publishing ports and linking to other containers will not work
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+when sharing the host's network stack.
179 183
 
180 184
 #### Mode: container
181
-With the networking mode set to `container` a container will share the 
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-network stack of another container.  The other container's name must be 
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+
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+With the networking mode set to `container` a container will share the
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+network stack of another container.  The other container's name must be
183 188
 provided in the format of `--net container:<name|id>`.
184 189
 
185
-Example running a redis container with redis binding to localhost then 
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-running the redis-cli and connecting to the redis server over the 
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-localhost interface.
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+Example running a Redis container with Redis binding to `localhost` then
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+running the `redis-cli` command and connecting to the Redis server over the
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+`localhost` interface.
188 193
 
189 194
     $ docker run -d --name redis example/redis --bind 127.0.0.1
190 195
     $ # use the redis container's network stack to access localhost
... ...
@@ -211,15 +213,14 @@ container:
211 211
     -c=0 : CPU shares (relative weight)
212 212
 
213 213
 The operator can constrain the memory available to a container easily
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-with `docker run -m`. If the host supports swap
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-memory, then the `-m` memory setting can be larger
216
-than physical RAM.
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+with `docker run -m`. If the host supports swap memory, then the `-m`
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+memory setting can be larger than physical RAM.
217 216
 
218 217
 Similarly the operator can increase the priority of this container with
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-the `-c` option. By default, all containers run at
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-the same priority and get the same proportion of CPU cycles, but you can
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-tell the kernel to give more shares of CPU time to one or more
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-containers when you start them via Docker.
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+the `-c` option. By default, all containers run at the same priority and
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+get the same proportion of CPU cycles, but you can tell the kernel to
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+give more shares of CPU time to one or more containers when you start
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+them via Docker.
223 222
 
224 223
 ## Runtime Privilege and LXC Configuration
225 224
 
... ...
@@ -277,19 +278,20 @@ commandline:
277 277
 
278 278
     $ docker run [OPTIONS] IMAGE[:TAG] [COMMAND] [ARG...]
279 279
 
280
-This command is optional because the person who created the `IMAGE` may have
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-already provided a default `COMMAND` using the Dockerfile `CMD`. As the
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-operator (the person running a container from the image), you can override that
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-`CMD` just by specifying a new `COMMAND`.
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+This command is optional because the person who created the `IMAGE` may
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+have already provided a default `COMMAND` using the Dockerfile `CMD`
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+instruction. As the operator (the person running a container from the
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+image), you can override that `CMD` instruction just by specifying a new
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+`COMMAND`.
284 285
 
285
-If the image also specifies an `ENTRYPOINT` then the `CMD` or `COMMAND` get
286
-appended as arguments to the `ENTRYPOINT`.
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+If the image also specifies an `ENTRYPOINT` then the `CMD` or `COMMAND`
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+get appended as arguments to the `ENTRYPOINT`.
287 288
 
288 289
 ## ENTRYPOINT (Default Command to Execute at Runtime)
289 290
 
290 291
     --entrypoint="": Overwrite the default entrypoint set by the image
291 292
 
292
-The ENTRYPOINT of an image is similar to a `COMMAND` because it
293
+The `ENTRYPOINT` of an image is similar to a `COMMAND` because it
293 294
 specifies what executable to run when the container starts, but it is
294 295
 (purposely) more difficult to override. The `ENTRYPOINT` gives a
295 296
 container its default nature or behavior, so that when you set an
... ...
@@ -310,10 +312,10 @@ or two examples of how to pass more parameters to that ENTRYPOINT:
310 310
 
311 311
 ## EXPOSE (Incoming Ports)
312 312
 
313
-The Dockerfile doesn't give much control over networking, only providing the
314
-`EXPOSE` instruction to give a hint to the operator about what incoming ports
315
-might provide services. The following options work with or override the
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-Dockerfile's exposed defaults:
313
+The Dockerfile doesn't give much control over networking, only providing
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+the `EXPOSE` instruction to give a hint to the operator about what
315
+incoming ports might provide services. The following options work with
316
+or override the Dockerfile's exposed defaults:
317 317
 
318 318
     --expose=[]: Expose a port from the container
319 319
                 without publishing it to your host
... ...
@@ -324,34 +326,34 @@ Dockerfile's exposed defaults:
324 324
                  (use 'docker port' to see the actual mapping)
325 325
     --link=""  : Add link to another container (name:alias)
326 326
 
327
-As mentioned previously, `EXPOSE` (and `--expose`) make a port available **in**
328
-a container for incoming connections. The port number on the inside of the
329
-container (where the service listens) does not need to be the same number as the
330
-port exposed on the outside of the container (where clients connect), so inside
331
-the container you might have an HTTP service listening on port 80 (and so you
332
-`EXPOSE 80` in the Dockerfile), but outside the container the port might be
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-42800.
327
+As mentioned previously, `EXPOSE` (and `--expose`) make a port available
328
+**in** a container for incoming connections. The port number on the
329
+inside of the container (where the service listens) does not need to be
330
+the same number as the port exposed on the outside of the container
331
+(where clients connect), so inside the container you might have an HTTP
332
+service listening on port 80 (and so you `EXPOSE 80` in the Dockerfile),
333
+but outside the container the port might be 42800.
334 334
 
335
-To help a new client container reach the server container's internal port
336
-operator `--expose`'d by the operator or `EXPOSE`'d by the developer, the
337
-operator has three choices: start the server container with `-P` or `-p,` or
338
-start the client container with `--link`.
335
+To help a new client container reach the server container's internal
336
+port operator `--expose`'d by the operator or `EXPOSE`'d by the
337
+developer, the operator has three choices: start the server container
338
+with `-P` or `-p,` or start the client container with `--link`.
339 339
 
340 340
 If the operator uses `-P` or `-p` then Docker will make the exposed port
341
-accessible on the host and the ports will be available to any client that
342
-can reach the host. To find the map between the host ports and the exposed
343
-ports, use `docker port`)
341
+accessible on the host and the ports will be available to any client
342
+that can reach the host. To find the map between the host ports and the
343
+exposed ports, use `docker port`)
344 344
 
345
-If the operator uses `--link` when starting the new client container, then the
346
-client container can access the exposed port via a private networking interface.
347
-Docker will set some environment variables in the client container to help
348
-indicate which interface and port to use.
345
+If the operator uses `--link` when starting the new client container,
346
+then the client container can access the exposed port via a private
347
+networking interface.  Docker will set some environment variables in the
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+client container to help indicate which interface and port to use.
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 ## ENV (Environment Variables)
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-The operator can **set any environment variable** in the container by using one
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-or more `-e` flags, even overriding those already defined by the developer with
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-a Dockerfile `ENV`:
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+The operator can **set any environment variable** in the container by
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+using one or more `-e` flags, even overriding those already defined by
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+the developer with a Dockerfile `ENV`:
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     $ docker run -e "deep=purple" --rm ubuntu /bin/bash -c export
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     declare -x HOME="/"
... ...
@@ -420,18 +422,19 @@ mechanism to communicate with a linked container by its alias:
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            If "container-dir" is missing, then docker creates a new volume.
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     --volumes-from="": Mount all volumes from the given container(s)
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423
-The volumes commands are complex enough to have their own documentation in
424
-section [*Share Directories via Volumes*](/userguide/dockervolumes/#volume-def).
425
-A developer can define one or more `VOLUME's associated with an image, but only the
426
-operator can give access from one container to another (or from a container to a
423
+The volumes commands are complex enough to have their own documentation
424
+in section [*Share Directories via
425
+Volumes*](/userguide/dockervolumes/#volume-def).  A developer can define
426
+one or more `VOLUME`'s associated with an image, but only the operator
427
+can give access from one container to another (or from a container to a
427 428
 volume mounted on the host).
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429 430
 ## USER
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431
-The default user within a container is `root` (id = 0), but if the developer
432
-created additional users, those are accessible too. The developer can set a
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-default user to run the first process with the `Dockerfile USER` command,
434
-but the operator can override it:
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+The default user within a container is `root` (id = 0), but if the
433
+developer created additional users, those are accessible too. The
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+developer can set a default user to run the first process with the
435
+Dockerfile `USER` instruction, but the operator can override it:
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436 437
     -u="": Username or UID
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