Building Docker images with a description fails

[KellerFuchs]

The task tasks.image.CreateImage fails when providers.label.description is set, seemingly due to improper quoting in the docker invocation.
See build log

[KellerFuchs]

Amusingly, the last commit there was mine (eca54d6), to fix an issue with the exact same thing.
I guess there was a breaking change in the Docker CLI?

[andsens]

Ah yes, I remember this, there was quite a bit of hassle with those labels.
This:

'LABEL description='"'"'Hashbang shell server, based on Debian jessie'"'"''

looks really bad. What was the value in your manifest?
I agree with the sentiment of using a standard escaping function, just be aware of the comment I added in the old escaping function.

Are you up for fixing this?

[KellerFuchs]

The manifest had this:

description: "Hashbang shell server, based on Debian {system.release}"

We are in the process of moving this particular build away from bootstrap-vz, since we aren't really taking advantage of it there, but I have other manifests that exhibit the same issue so I could prepare a patch for those.