docker container commit

Description

Create a new image from a container’s changes

Usage

docker container commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]

Options

Name, shorthand	Default	Description
`--author, -a`		Author (e.g., “John Hannibal Smith hannibal@a-team.com”)
`--change, -c`		Apply Dockerfile instruction to the created image
`--message, -m`		Commit message
`--pause, -p`	`true`	Pause container during commit

Parent command

Command	Description
docker container	Manage containers

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

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 container commit -c="ENV DEBUG true" 98bd7fc99854 debug-image

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https://docs.docker.com/engine/reference/commandline/container_commit/