@@ -1610,6 +1610,30 @@ container exits with a non-zero exit status more than 10 times in a row

 Docker will abort trying to restart the container.  Providing a maximum

 restart limit is only valid for the ** on-failure ** policy.

+### Adding entries to a container hosts file

+

+You can add other hosts into a container's `/etc/hosts` file by using one or more

+`--add-host` flags. This example adds a static address for a host named `docker`:

+

+```

+    $ docker run --add-host=docker:10.180.0.1 --rm -it debian

+    $$ ping docker

+    PING docker (10.180.0.1): 48 data bytes

+    56 bytes from 10.180.0.1: icmp_seq=0 ttl=254 time=7.600 ms

+    56 bytes from 10.180.0.1: icmp_seq=1 ttl=254 time=30.705 ms

+    ^C--- docker ping statistics ---

+    2 packets transmitted, 2 packets received, 0% packet loss

+    round-trip min/avg/max/stddev = 7.600/19.152/30.705/11.553 ms

+```

+

+> **Note:**

+> Sometimes you need to connect to the Docker host, which means getting the IP

+> address of the host. You can use the following shell commands to simplify this

+> process:

+>

+>      $ alias hostip="ip route show 0.0.0.0/0 | grep -Eo 'via \S+' | awk '{ print \$2 }'"

+>      $ docker run  --add-host=docker:$(hostip) --rm -it debian

+

 ## save

     Usage: docker save [OPTIONS] IMAGE [IMAGE...]