# Static (musl) build image for the server binaries. Extends the musl-cross toolchain image with
# `protoc`, which admin-proto's build script (tonic-prost-build) needs to compile the gRPC .proto.
FROM messense/rust-musl-cross:x86_64-musl

# The base image's apt `protobuf-compiler` predates 3.15, so it rejects admin.proto's `proto3 optional`
# fields. Install a pinned upstream protoc release instead.
ARG PROTOC_VERSION=29.3
RUN apt-get update \
    && apt-get install -y --no-install-recommends curl unzip ca-certificates \
    && curl -fsSL -o /tmp/protoc.zip \
        "https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-x86_64.zip" \
    && unzip -o /tmp/protoc.zip -d /usr/local bin/protoc 'include/*' \
    && rm /tmp/protoc.zip \
    && rm -rf /var/lib/apt/lists/*