DOCKER(1)

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

Using an existing container's name or ID you can create a new image.

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