Commits on Oct 20, 2024

1. Support reproducible builds (except packages) …

   See docker-library/official-images issue 16044
   
   - `SOURCE_DATE_EPOCH` is added.
     The value is consumed by the build scripts to make the binary reproducible.
   
   - For Debian, `/var/log/*` is removed as they contain timestamps
   
   - For Debian, `/var/cache/ldconfig/aux-cache` is removed as they contain inode numbers, etc.
   
   - For Alpine, virtual package versions are pinned to "0" to eliminate
     the timestamp-based version numbers that appear in `/etc/apk/world` and `/lib/apk/db/installed`
   
   > [!NOTE]
   > The following topics are NOT covered by this commit:
   >
   > - To reproduce file timestamps in layers, BuildKit has to be executed with
   >   `--output type=<TYPE>,rewrite-timestamp=true`.
   >   Needs BuildKit v0.13 or later.
   >
   > - To reproduce the base image by the hash, reproducers may:
   >   - modify the `FROM` instruction in Dockerfile manually
   >   - or, use the `CONVERT` action of source policies to replace the base image.
   >     <https://github.com/moby/buildkit/blob/v0.13.2/docs/build-repro.md>
   >
   > - To reproduce packages, see the `RUN` instruction hook proposed in
   >   moby/buildkit issue 4576
   
   Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

   

   AkihiroSuda committed Oct 20, 2024
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