I've hit errors with the default value of docker.dataImage using the groupId which is sometimes too long or an invalid string for docker

[fabric8io]

I've hit errors with the default value of docker.dataImage using the groupId which is sometimes too long or an invalid string for docker

[jstrachan]

the error you get is:

Invalid namespace name, only [a-z0-9_] are allowed, size between 4 and 30

so we should be able to verify those (in my case it was using "-" I think that was the issue; maybe we should turn "-" into "_" by default?

[rhuss]

I already have a sanitize method however seems to do the wrong thing ;-)

'will fix this ...