FROM docker.io/rust:1-alpine3.18 AS builder

RUN apk --no-cache add musl-dev

ENV CARGO_CARGO_NEW_VCS="none"
ENV CARGO_BUILD_RUSTFLAGS="-C target-feature=+crt-static"

WORKDIR /work

RUN cargo init

COPY Cargo.toml Cargo.lock ./
RUN cargo build --release --target=$(arch)-unknown-linux-musl

COPY . .

# ensure rebuilding of the app
RUN touch src/main.rs 
RUN cargo build --release --target=$(arch)-unknown-linux-musl
RUN cp "./target/$(arch)-unknown-linux-musl/release/findpenguins-feed" /app


FROM scratch

COPY --from=builder /app /app
CMD ["/app"]