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docker-commit - Online in the Cloud

Run docker-commit in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command docker-commit that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



docker-commit - Create a new image from a container's changes


docker commit [-a|--author[=AUTHOR]] [-c|--change[=[DOCKERFILE INSTRUCTIONS]]] [--help]
[-m|--message[=MESSAGE]] [-p|--pause[=true]] CONTAINER [REPOSITORY[:TAG]]


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.


-a, --author=""
Author (e.g., "John Hannibal Smith ⟨[email protected]⟩")

-c , --change=[]
Apply specified Dockerfile instructions while committing the image
Supported Dockerfile instructions:

Print usage statement

-m, --message=""
Commit message

-p, --pause=true|false
Pause container during commit. The default is true.


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

Note that only a-z0-9-_. are allowed when naming images from an existing container.

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


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
[email protected]⟩ July 2014, updated by Sven Dowideit ⟨[email protected]
Oct 2014, updated by Daniel, Dao Quang Minh <daniel at nitrous dot io> June 2015, updated
by Sally O'Malley ⟨[email protected]

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