apps/ingest/Dockerfile.prebuilt

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# Runner-only image. The binary is compiled BEFORE the deploy (by
# .github/workflows/build-ingest-binary.yml, which every deploy workflow calls)
# and dropped at dist/maple-ingest, so `alchemy deploy` pays a COPY instead of a
# from-scratch cargo build of 385 crates.
#
# That binary is aarch64: the ECS tasks are Graviton (`runtimePlatform` in
# alchemy.run.ts), so this image builds for linux/arm64 and the debian base
# below resolves to the arm64 variant. COPY preserves the file mode from the
# build context — the workflow restores the exec bit that the artifact upload
# drops, because a non-executable binary here surfaces as a task that starts and
# exits on `permission denied`.
#
# Why not just cache the Docker layers: alchemy's image build passes only
# tag/context/file/platform/build-arg to the daemon (`AWS/ECR/Image.ts`), with
# no --cache-from, and a fresh CI runner has an empty local cache. So a
# Dockerfile that compiles is a cold compile every single deploy, however it is
# layered. Moving the compile out is the only place a cache can exist.
#
# The compile MUST happen against bookworm's glibc (2.36) — building on the
# ubuntu-24.04 runner (2.39) instead produces a binary that dies at startup with
# `version 'GLIBC_2.39' not found`. The workflow enforces this by compiling
# inside rust:1.94-bookworm rather than on the host.
#
# `Dockerfile` (the self-contained source build) stays the default and is what a
# local `alchemy deploy` uses; alchemy.run.ts picks this one only when
# dist/maple-ingest is actually present.
FROM debian:bookworm-slim

RUN apt-get update && \
    apt-get install -y --no-install-recommends ca-certificates && \
    rm -rf /var/lib/apt/lists/*

COPY dist/maple-ingest /usr/local/bin/maple-ingest

EXPOSE 3474

CMD ["maple-ingest"]