new "image" mount type

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>

1 files changed, 2 insertions, 1 deletions

diff --git a/cmd/podman/common/specgen.go b/cmd/podman/common/specgen.go
index f427830c6..bd3e5fafd 100644
--- a/cmd/podman/common/specgen.go
+++ b/cmd/podman/common/specgen.go
@@ -533,13 +533,14 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
 
 	// Only add read-only tmpfs mounts in case that we are read-only and the
 	// read-only tmpfs flag has been set.
-	mounts, volumes, overlayVolumes, err := parseVolumes(c.Volume, c.Mount, c.TmpFS, c.ReadOnlyTmpFS && c.ReadOnly)
+	mounts, volumes, overlayVolumes, imageVolumes, err := parseVolumes(c.Volume, c.Mount, c.TmpFS, c.ReadOnlyTmpFS && c.ReadOnly)
 	if err != nil {
 		return err
 	}
 	s.Mounts = mounts
 	s.Volumes = volumes
 	s.OverlayVolumes = overlayVolumes
+	s.ImageVolumes = imageVolumes
 
 	for _, dev := range c.Devices {
 		s.Devices = append(s.Devices, specs.LinuxDevice{Path: dev})