This carries #241 with additional fixes to the test suite from me. From @Random-Liu's original:

For image volume, currently we only:

1. Create host directory and mount into the image;
2. Change the ownership of the host directory to be the same with mount point inside the image.

What we are going to do in the future:

1. Consider whether we need to copy existing content in the image into the volume. Support ExposedPorts and Volumes in image config. #186.
2. Consider whether we should add the helper into containerd Add WithVolume helper in client. containerd#1482.
3. Consider how to properly manage these volumes in kubelet Ensure that host disk space used by Docker volume is accounted for kubernetes/kubernetes#52032.

Signed-off-by: Lantao Liu lantaol@google.com
Signed-off-by: Ian Campbell ijc@docker.com