[WIP] use gosu instead of sudo

[cyberkov]

Hello!

According to the Dockerfile Best Practices one should use gosu instead of sudo to circumvent problems arising with apparmor on the host system.
I prepared a test image on dockerhub for x86: docker pull cyberkov/openhab2:gosu to try it out.
Unfortunately I cannot reproduce the problem on Debian Jessie yet, so I would be glad if someone could verify it.
This should fix #12

Cheers
Hannes

[danbo]

I ran into #12 when trying the official image. I tried yours and can confirm I'm no longer seeing the problem.

I'm running Ubuntu 14 LTS as the docker host.

[cniweb]

@cyberkov Can you resolve the conflicts, please?

[cyberkov]

Hello!

Yes. I look into it.

Cheers Hannes

[legacycode]

I have tested the gosu branch from cyberkov on ubuntu 14.04 and debian jessie. The branch works on both systems. I used following compose file:

openhab2:
  image: "openhab/gosu"
  net: host
  volumes:
    - "/etc/localtime:/etc/localtime:ro"
    - "/etc/timezone:/etc/timezone:ro"
    - "/opt/gosu/userdata:/openhab/userdata"
    - "/opt/gosu/conf:/openhab/conf"
  environment:
    OPENHAB_HTTP_PORT: "6080"
    OPENHAB_HTTPS_PORT: "6443"
  command: "server"

Distributor ID: Ubuntu (works)
Description:    Ubuntu 14.04.5 LTS
Release:        14.04
Codename:       trusty
Docker version 1.12.3, build 6b644ec
docker-compose version 1.7.1, build 0a9ab35

Distributor ID: Debian (works)
Description:    Debian GNU/Linux 8.6 (jessie)
Release:        8.6
Codename:       jessie
Docker version 1.12.5, build 7392c3b
docker-compose version 1.9.0, build 2585387

[legacycode]

I created a new pull request #43 resolving the conflicts.