Split apt cache into separate non-launch layer#9
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Move APT_CACHE_DIR, APT_STATE_DIR, sources, and keys into a new apt-cache layer with launch=false so cached .deb files and package lists from apt-get update are excluded from the final image. The apt layer retains only the extracted packages (dpkg -x output) and environment variable configuration, which is what actually needs to be present at launch time.
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Testing:
Produced image has no apt-cache layer: Confirmed the apt layer only has package installed files. |
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Cached .deb files and apt-get update package lists were ending up in the final image because they lived inside the apt layer (which has launch = true). See #6.
This splits them into a separate apt-cache layer with launch = false, build = false, cache = true, so the lifecycle restores them between builds but never exports them to the OCI image. Move APT_CACHE_DIR, APT_STATE_DIR, sources, and keys into a new apt-cache layer with launch=false so cached .deb files and package lists from apt-get update are excluded from the final image.
The apt layer retains only the extracted packages (dpkg -x output) and environment variable configuration, which is what actually needs to be present at launch time.
Supersedes #6