Container running as root about collector

[JordanP]

Hum, actually it's using gosu. Why not just use "USER" in the Dockerfile ? Problem is, anybody that can "exec" into the container is actually "root".

[lfittl]

@JordanP I think this is mostly for historic reasons, since Docker didn't always support running the container as non-root. We'll review whether we can move away from the gosu-based approach, and instead use the USER command.

We would of course also welcome a patch for this, if you'd like.

[lfittl]

@JordanP FYI, we have a test image available at #174 that uses USER instead of gosu for the privilege drop. It would be great if you can give that a look and see whether it works for your environment.

[lfittl]

Closing based on #174 being merged.