d9e0ef7cc8
Docs: Be more clear when specifying valid formats for strings
(cherry picked from commit effc91e7a5)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2.7 KiB
% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014
NAME
docker-tag - Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
SYNOPSIS
docker tag [--help] SOURCE_NAME[:TAG] TARGET_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 ':'.
"OPTIONS"
--help Print usage statement.
NAME
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
letters, 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.
TAG The tag assigned to the image to version and distinguish images with the same name. The tag name must be valid ASCII and may contain lowercase and uppercase letters, digits, underscores, periods and hyphens. A tag name may not start with a period or a hyphen and may contain a maximum of 128 characters.
EXAMPLES
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 httpd:latest.
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
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 June 2015, updated by Sally O'Malley somalley@redhat.com