Avoid removing white space

[pulledtim]

Currently no whitespace is in front of the secret, which results in an helm error

[tmaier]

A Password with whitespace? Is this a real problem? What are the conventions at other helm charts?

[pulledtim]

Ok a little missunderstanding. The generated secrets yaml will have no whitespace between MONGODB_PASSWORD: and the password. Resulting in this error
Error: YAML parse error on errbit-helm/templates/secret.yaml: error converting YAML to JSON: yaml: line 14: could not find expected ':'

[pulledtim]

I also updated the Dockerfile. The current version of the errbit container does not have the user errbit anymore -> errbit/errbit#1275
I hope you are ok with me adding a fixed version of the errbit container, since I think it helps with making the build reproducible