Dockerfile

FROM rust:latest AS builder

RUN rustup target add x86_64-unknown-linux-musl
RUN apt update && apt install -y musl-tools musl-dev
RUN update-ca-certificates

# Create appuser
ENV USER=pr
ENV UID=10001

RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/nonexistent" \
    --shell "/sbin/nologin" \
    --no-create-home \
    --uid "${UID}" \
    "${USER}"


COPY src src
COPY Cargo.toml Cargo.toml
RUN cargo build --target x86_64-unknown-linux-musl --release

FROM scratch

COPY --from=builder /etc/passwd /etc/passwd
COPY --from=builder /etc/group /etc/group

WORKDIR /pr

COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

COPY --from=builder /target/x86_64-unknown-linux-musl/release/release_notifier ./

USER pr:pr

ENTRYPOINT [ "/pr/release_notifier" ]