1.9 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 specified Dockerfile instructions while committing the image Supported Dockerfile instructions: ADD|CMD|ENTRYPOINT|ENV|EXPOSE|FROM|MAINTAINER|RUN|USER|LABEL|VOLUME|WORKDIR|COPY
--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