fix: drop pinned base image digests from FROM lines#210
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official-images doesn't accept digest-pinned FROM lines — bashbrew resolves the parent image from the tag and rebuilds haskell images whenever the base image is rebuilt, which pinning defeats. See docker-library/official-images#21812 - remove the digest field from the Nickel schema, template, and all variant data files, and regenerate the Dockerfiles - strip digests from the hand-maintained buster/slim-buster Dockerfiles - disable Renovate's pinDigests for Dockerfiles so they don't come back
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official-images repo doesn't accept digest-pinned FROM lines - bashbrew resolves the parent image from the tag and rebuilds haskell images whenever the base image is rebuilt, which pinning defeats. See docker-library/official-images#21812