Use proper init process

[cptactionhank]

Use proper init process

[pwagland]

Having seen this problem in our environment, I'm putting together a fix for this. It is based on top of my fix for #4, so I need/want to wait to see what happens to it before I push this one.

[cguentherTUChemnitz]

Is there any progress on this ticket?
In my environment it seems that the propper init process of @cbromberg does fix the problem:
https://github.com/cbromberg/docker-atlassian-bamboo/commit/87156e02328783bdc07d37e0c3f5c29c39ade47d

I don't know why he didn't create a PR. @cptactionhank will it be possible to merge this changeset into your project?

[cbromberg]

@cguentherTUChemnitz I created a PR and withdrew it again as the "proper init process" is already part of docker and docker-compose since 1.13.0: see comment here #7