rust:1.97 (unsuffixed) now resolves to a trixie base, whose newer glibc
produced a binary the bookworm-slim runtime stage couldn't load
("GLIBC_2.38 not found (required by mcmapper-worker)"), crash-looping the
container on every start. Pinning the builder to rust:1.97-bookworm matches
the runtime's Debian release. Confirmed by rebuilding and running the real
image — worker now starts and runs (its next failure is an unrelated,
expected MinIO connectivity gap, not this).
octoturge
bd4ad00159