Docker builder - STOPSIGNAL

[G. Richard Bellamy]

The current methodology for injecting metadata into a Docker image is via "changes:[]", which is then used via "docker commit --change".

Because "docker commit --change" doesn't support STOPSIGNAL, neither does the current implementation of the packer Docker builder.

I'm struggling with the proper methodology for this. On the one hand, I could create a base image using a Dockerfile, which is probably my current best bet. Or I could do signal handling in my ENTRYPOINT, which seems irrational as there's STOPSIGNAL for exactly that purpose.

Any guidance or suggestions are greatly appreciated!

[G. Richard Bellamy]

Unless I'm wrong, there is no way that I can see to use source a packer-built Docker image from two upstream images, so my "best bet" isn't really an option.