a974789537
Update the man page for 'docker commit' to make explicit the fact that 'commit' does not save data in volumes. Addresses comments in #7583 Signed-off-by: Lars Kellogg-Stedman <lars@redhat.com>
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% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014
NAME
docker-commit - Create a new image from a container's changes
SYNOPSIS
docker commit [-a|--author[=AUTHOR]] [--help] [-c|--change[= []]] [-m**|--message[=MESSAGE]] [-p|--pause[=true]] CONTAINER [REPOSITORY[:TAG]]
DESCRIPTION
Create a new image from an existing container specified by name or container ID. The new image will contain the contents of the container filesystem, excluding any data volumes.
While the docker commit command is a convenient way of extending an
existing image, you should prefer the use of a Dockerfile and docker build for generating images that you intend to share with other
people.
OPTIONS
-a, --author="" Author (e.g., "John Hannibal Smith hannibal@a-team.com")
-c , --change=[]
Apply specified Dockerfile instructions while committing the image
Supported Dockerfile instructions: CMD|ENTRYPOINT|ENV|EXPOSE|ONBUILD|USER|VOLUME|WORKDIR
--help Print usage statement
-m, --message="" Commit message
-p, --pause=true|false Pause container during commit. The default is true.
EXAMPLES
Creating a new image from an existing container
An existing Fedora based container has had Apache installed while running
in interactive mode with the bash shell. Apache is also running. To
create a new image run docker ps to find the container's ID and then run:
# docker commit -m="Added Apache to Fedora base image" \
-a="A D Ministrator" 98bd7fc99854 fedora/fedora_httpd:20
Apply specified Dockerfile instructions while committing the image
If an existing container was created without the DEBUG environment
variable set to "true", you can create a new image based on that
container by first getting the container's ID with docker ps and
then running:
# docker commit -c="ENV DEBUG true" 98bd7fc99854 debug-image
HISTORY
April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on docker.com source material and in June 2014, updated by Sven Dowideit SvenDowideit@home.org.au July 2014, updated by Sven Dowideit SvenDowideit@home.org.au Oct 2014, updated by Daniel, Dao Quang Minh