docker-tag man page
docker-tag — Create a tag
TARGET_IMAGE that refers to
docker tag [--help] SOURCE_NAME[:TAG] TARGET_NAME[:TAG]
Assigns a new alias to an image in a registry. An alias refers to the entire image name including the optional
TAG after the ':'.
Print usage statement.
The image name which is made up of slash-separated name components,
optionally prefixed by a registry hostname. The hostname must comply with
standard DNS rules, but may not contain underscores. If a hostname is
present, it may optionally be followed by a port number in the format
:8080. If not present, the command uses Docker's public registry located at
registry-1.docker.io by default. Name components may contain lowercase
characters, digits and separators. A separator is defined as a period, one or
two underscores, or one or more dashes. A name component may not start or end
with a separator.
The tag assigned to the image to version and distinguish images with the same
name. The tag name may contain lowercase and uppercase characters, digits,
underscores, periods and dashes. A tag name may not start with a period or a
dash and may contain a maximum of 128 characters.
Tagging an image referenced by ID
To tag a local image with ID "0e5574283393" into the "fedora" repository with "version1.0":
docker tag 0e5574283393 fedora/httpd:version1.0
Tagging an image referenced by Name
To tag a local image with name "httpd" into the "fedora" repository with "version1.0":
docker tag httpd fedora/httpd:version1.0
Note that since the tag name is not specified, the alias is created for an existing local version
Tagging an image referenced by Name and Tag
To tag a local image with name "httpd" and tag "test" into the "fedora" repository with "version1.0.test":
docker tag httpd:test fedora/httpd:version1.0.test
Tagging an image for a private repository
To push an image to a 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
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 ⟨email@example.com⟩ June 2015, updated by Sally O'Malley ⟨firstname.lastname@example.org⟩
docker(1), docker-build(1), docker-commit(1), docker-push(1).