# Build the application from source.
FROM rust:1.80.1-slim@sha256:e8e40c50bfb54c0a76218f480cc69783b908430de87b59619c1dca847fdbd753 AS rust-builder

ENV CARGO_HOME="/cache/cargo"

WORKDIR /app

COPY Cargo.toml Cargo.lock ./
COPY src/ ./src/

# Install musl-tools to cross-compile the application for a lean image.
RUN --mount=type=cache,target="/var/cache/" \
    --mount=type=cache,target="/var/lib/apt/lists/" \
    apt-get update && apt-get install -y --no-install-recommends musl-tools

# Build the application for the musl target.
RUN --mount=type=cache,target=${CARGO_HOME} \
    rustup target add x86_64-unknown-linux-musl && \
    cargo build --release --locked --target x86_64-unknown-linux-musl

# Deploy the application binary into a lean image.
FROM gcr.io/distroless/static-debian12:latest@sha256:ce46866b3a5170db3b49364900fb3168dc0833dfb46c26da5c77f22abb01d8c3 AS runtime
LABEL maintainer="DeadNews <deadnewsgit@gmail.com>"

COPY --from=rust-builder /app/target/x86_64-unknown-linux-musl/release/deadnews-template-rust /usr/local/bin/deadnews-template-rust

USER nonroot:nonroot
EXPOSE 8080
HEALTHCHECK NONE

CMD ["deadnews-template-rust"]