1.8 KiB
% 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
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 a modification in Dockerfile format before committing the image.
--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
Modify configuration settings before committing the image
An existing container was created without the necessary environment variable DEBUG set to "true". To create a new image based on the container with a correct DEBUG environment variable, run docker ps to find the container's ID and then run
# 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