podman-commit - Man Page

Create new image based on the changed container

Synopsis

podman commit [options] container [image]

podman container commit [options] container [image]

podman commit creates an image based on a changed container. The author of the image can be set using the --author OPTION. Various image instructions can be configured with the --change OPTION and a commit message can be set using the --message OPTION. The container and its processes aren't paused while the image is committed. If this is not desired, the --pause OPTION can be set to true. When the commit is complete, Podman prints out the ID of the new image.

If image does not begin with a registry name component, localhost is added to the name. If image is not provided, the values for the REPOSITORY and TAG values of the created image is set to <none>.

Options

--author, -a=author

Set the author for the committed image.

--change, -c=instruction

Apply the following possible instructions to the created image:

CMD
ENTRYPOINT
ENV
EXPOSE
LABEL
ONBUILD
STOPSIGNAL
USER
VOLUME
WORKDIR

Can be set multiple times.

--config=ConfigBlobFile

Merge the container configuration from the specified file into the configuration for the image as it is being committed. The file contents should be a JSON-encoded version of a Schema2Config structure, which is defined at https://github.com/containers/image/blob/v5.29.0/manifest/docker_schema2.go#L67.

--format, -f=oci | docker

Set the format of the image manifest and metadata. The currently supported formats are oci and docker.
The default is oci.

--iidfile=ImageIDfile

Write the image ID to the file.

--include-volumes

Include in the committed image any volumes added to the container by the --volume or --mount OPTIONS to the podman create and podman run commands.
The default is false.

--message, -m=message

Set commit message for committed image.
IMPORTANT: The message field is not supported in oci format.

--pause, -p

Pause the container when creating an image.
The default is false.

--quiet, -q

Suppresses output.
The default is false.

--squash, -s

Squash newly built layers into a single new layer.
The default is false.

Examples

Create image from container with entrypoint and label:

$ podman commit --change CMD=/bin/bash --change ENTRYPOINT=/bin/sh --change "LABEL blue=image" reverent_golick image-committed
Getting image source signatures
Copying blob sha256:b41deda5a2feb1f03a5c1bb38c598cbc12c9ccd675f438edc6acd815f7585b86
 25.80 MB / 25.80 MB [======================================================] 0s
Copying config sha256:c16a6d30f3782288ec4e7521c754acc29d37155629cb39149756f486dae2d4cd
 448 B / 448 B [============================================================] 0s
Writing manifest to image destination
Storing signatures
e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8

Create image from container with commit message:

$ podman commit -q --message "committing container to image"
reverent_golick image-committed
e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8

Create image from container with author:

$ podman commit -q --author "firstName lastName" reverent_golick image-committed
e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8

Pause running container while creating image:

$ podman commit -q --pause=true containerID image-committed
e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8

Create image from container with default image tag:

$ podman commit containerID
e3ce4d93051ceea088d1c242624d659be32cf1667ef62f1d16d6b60193e2c7a8

Create image from container with default required capabilities:

$ podman commit -q --change LABEL=io.containers.capabilities=setuid,setgid epic_nobel privimage
400d31a3f36dca751435e80a0e16da4859beb51ff84670ce6bdc5edb30b94066

History

December 2017, Originally compiled by Urvashi Mohnani umohnani@redhat.com ⟨mailto:umohnani@redhat.com⟩

Referenced By

podman(1), podman-container(1), podman-remote(1).

The man pages docker-commit(1), docker-container-commit(1) and podman-container-commit(1) are aliases of podman-commit(1).