Add a new "image" mount type to `--mount`. The source of the mount is
the name or ID of an image. The destination is the path inside the
container. Image mounts further support an optional `rw,readwrite`
parameter which if set to "true" will yield the mount writable inside
the container. Note that no changes are propagated to the image mount
on the host (which in any case is read only).
Mounts are overlay mounts. To support read-only overlay mounts, vendor
a non-release version of Buildah.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
In c/image, this adds the the mirror-by-digest-only option to mirrors, and
moves the search order to an independent list.
A synchronized buildah update is necessary to deal with the c/image API change.
Signed-off-by: Miloslav Trmač <mitr@redhat.com>
Mainly add support for podman build using --overlay mounts.
Updates containers/image also adds better support for new registries.conf
file.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
