% DOCKER(1) Docker User Manuals

 % Docker Community
 % JUNE 2014

 # NAME

 docker-tag - Tag an image into a repository

 
 # SYNOPSIS

 **docker tag**
 [**-f**|**--force**[=*false*]]

 [**--help**]

 IMAGE[:TAG] [REGISTRY_HOST/][USERNAME/]NAME[:TAG]

 
 # DESCRIPTION

 Assigns a new alias to an image in a registry. An alias refers to the
 entire image name including the optional `TAG` after the ':'. 
 
 If you do not specify a `REGISTRY_HOST`, the command uses Docker's public
 registry located at `registry-1.docker.io` by default. 

 
 # "OPTIONS"

 **-f**, **--force**=*true*|*false*

    When set to true, force the alias. The default is *false*.

 
 **REGISTRYHOST**

    The hostname of the registry if required. This may also include the port

 separated by a ':'
 
 **USERNAME**

    The username or other qualifying identifier for the image.

 
 **NAME**

    The image name.

 
 **TAG**

    The tag you are assigning to the image.  Though this is arbitrary it is

 recommended to be used for a version to distinguish images with the same name.

 Note that here TAG is a part of the overall name or "tag".

 # OPTIONS
 **-f**, **--force**=*true*|*false*
    Force. The default is *false*.
 

 # EXAMPLES
 

 ## Giving an image a new alias

 Here is an example of aliasing an image (e.g., 0e5574283393) as "httpd" and 

 tagging it into the "fedora" repository with "version1.0":

 
     docker tag 0e5574283393 fedora/httpd:version1.0
 
 ## Tagging an image for a private repository
 
 To push an image to an private registry and not the central Docker
 registry you must tag it with the registry hostname and port (if needed).
 
     docker tag 0e5574283393 myregistryhost:5000/fedora/httpd:version1.0
 
 # HISTORY

 April 2014, Originally compiled by William Henry (whenry at redhat dot com)

 based on docker.com source material and internal work.

 June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>

 July 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>

 April 2015, updated by Mary Anthony for v2 <mary@docker.com>