NAME¶

umoci raw add-layer - add a layer archive verbatim to an image

SYNOPSIS¶

umoci raw add-layer --image=image [--tag=tag] [--no-history] [--history.comment=comment] [--history.created_by=created_by] [--history.author=author] [--history-created=date] new-layer.tar

DESCRIPTION¶

Adds the uncompressed layer archive referenced by new-layer.tar verbatim to the image. Note that since this is done verbatim, no changes are made to the layer and thus any OCI-specific tar extensions (such as .wh. whiteout files) will be included unmodified. Use of this command is therefore only recommended for expert users, and more novice users should look at umoci-repack(1) to create their layers.

At the moment, umoci raw add-layer only supports appending layers to the end of the image layer list.

OPTIONS¶

The global options are defined in umoci(1).

--image=image[:tag]
The source tag to use as the base of the image containing the new layer.
image must be a path to a valid OCI image and tag must be a valid tag in
the image. If tag is not provided it defaults to "latest".

--tag=tag
The destination tag to use for the newly created image. tag must be a valid
tag in the image. If tag is not provided it defaults to the tag specified
in --image (overwriting it).

--no-history
Causes no history entry to be added for this operation. This is not
recommended for use with umoci-raw-add-layer(1), since it results in the
history not including all of the image layers -- and thus will cause
confusion with tools that look at image history.

--history.comment=comment
Comment for the history entry corresponding to this modification of the image
If unspecified, umoci(1) will generate an implementation-dependent value.

--history.created_by=created_by
CreatedBy entry for the history entry corresponding to this modification of
the image. If unspecified, umoci(1) will generate an
implementation-dependent value.

--history.author=author
Author value for the history entry corresponding to this modification of the
image. If unspecified, this value will be the image's author value after
any modifications were made by this call of umoci-config(1).

--history-created=date
Creation date for the history entry corresponding to this modifications of
the image. This must be an ISO8601 formatted timestamp (see date(1)). If
unspecified, the current time is used.

EXAMPLE¶

The following takes an existing diff directory, creates a new archive from it and then inserts it into an existing image. Note that the new archive is not compressed (umoci will compress the archive for you).

% tar cfC diff-layer.tar diff/ .
% umoci raw add-layer --image oci:foo diff-layer.tar

SEE ALSO¶

umoci(1), umoci-repack(1)