initial docker-image resource type
add some whitespace
fixup docker helpers; setup cgroups, fix quotes
docker out script works relative to src dir
clean up check a bit
apt-get update before installing docker

openssl 404
docker-image: clarify /check output
docker-image: improve check for docker running
docker-image: /in and /out updates

* /in `save's image, writes repo, tag, image id
* /out can `load' an image to push
docker-image: save by image, not repo:tag
better docker crash tolerance
fix docker exit logs
docker-image check: exit if docker has exited
append to docker log files

this really shouldn't happen more than once, but this will at least show it
happening
remove redundant docker pidfile write
docker-image: get credentials from source
docker image output: get repo/tag from source
update for new /out behavior

git /out takes repo to push as a param; docker-image /out now chdirs to source
docker resource: add 'format' parameter

'rootfs' value configures it to extract the image; default is 'docker', i.e.
'docker save'
optionally extract rootfs, always save