tree 36c588f9ce2db8ad8ab2a3c9495fea87402b181d
parent 8af675a07576940ba24e3d91abd10b029b937946
author Pietro Albini <pietro@pietroalbini.org> 1550438653 +0100
committer Pietro Albini <pietro@pietroalbini.org> 1550500090 +0100
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ci: fix docker cache hash collision

Before this commit the hash used to cache docker images was calculated
from the image's files and the files in the scripts/ directory. This
worked fine when all the files used by an image were in those
directories, but some images pull files from other images, causing hash
collisions in some cases.

This commit changes the hash to include the files of all the docker
images, causing a rebuild of all the images when a single one changes.
That's a bit heavy-handed, but we have no way to track which files an
image pulls in and hash collisions are really painful to deal with.