- Grab the uid:gid of the repo root in docker
- Use that for the node user we run as in the container
- Check owner of all volume mounts, if not OK, fix them
- this should avoid permission errors on linux
- provide bin/fix-volumes to fix owner issues ad hoc
- There is no more ../node_modules
  - 1 and only 1 place where modules go for local dev (and prod)
  - local dev it's a volume mount, prod it's baked in
  - We have no native add-ons at the moment, so it should be OK, but
    `npm rebuild` as needed
- Also many docker and CI refactorings
  - split prod and dev dockerfiles
    - They are both small now
  - Use ci-scripts/docker-labels to reduce LABEL boilerplate
  - change lint CI task to run outside a docker container

Signed-off-by: Peter Lyons <pete@reactioncommerce.com>