Include docker.config mount in chart

[squaremo]

From #539 (comment):

would it be possible to add the docker.config parameter to the helm chart? Than you only need to generate the config-mapping or secret

I think this means: if you supply this argument, then mount the docker-config from the resource named.

[Alien2150]

Hey, you nailed it :)

[Alien2150]

if you like i could provide a PR @squaremo

[squaremo]

if you like i could provide a PR @squaremo

That would be very welcome!

[Alien2150]

#1314