Dockerfile

ARG RUST_VERSION=1.76.0
ARG APP_NAME=moonscale
FROM rust:${RUST_VERSION}-slim-bullseye AS build
ARG APP_NAME
WORKDIR /app

# Build the application.
# Leverage a cache mount to /usr/local/cargo/registry/
# for downloaded dependencies and a cache mount to /app/target/ for
# compiled dependencies which will speed up subsequent builds.
# Leverage a bind mount to the src directory to avoid having to copy the
# source code into the container. Once built, copy the executable to an
# output directory before the cache mounted /app/target is unmounted.
RUN --mount=type=bind,source=src,target=src \
    --mount=type=bind,source=resources,target=resources \
    --mount=type=bind,source=Cargo.toml,target=Cargo.toml \
    --mount=type=bind,source=Cargo.lock,target=Cargo.lock \
    --mount=type=cache,target=/app/target/ \
    --mount=type=cache,target=/usr/local/cargo/registry/ \
    <<EOF
set -e
cargo build --locked --release
cp ./target/release/$APP_NAME /bin/server
EOF

FROM debian:bullseye-slim AS final

ARG UID=10001
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/home/moonscale" \
    --shell "/sbin/nologin" \
    --uid "${UID}" \
    moonscale
USER moonscale

COPY --from=build /bin/server /bin/

ENV ROCKET_ADDRESS=0.0.0.0
EXPOSE 8000

CMD ["/bin/server"]