Dockerfile for static musl builds for Rust programs to run on scratch 7mb container

Dockerfile

FROM rust:slim as builder
RUN apt-get update && apt-get install -y libpq-dev libssl-dev pkg-config musl-tools perl make && rm -rf /var/lib/apt/lists/*
RUN export OPENSSL_STATIC=1
RUN export OPENSSL_NO_VENDOR=Y
RUN rustup target add x86_64-unknown-linux-musl
WORKDIR /app
COPY . /app
RUN cargo build --release --target x86_64-unknown-linux-musl
RUN strip /app/target/x86_64-unknown-linux-musl/release/bt_postgres_test

#FROM gcr.io/distroless/cc-debian12:latest
FROM scratch
COPY --from=builder /app/target/x86_64-unknown-linux-musl/release/bt_postgres_test /s
WORKDIR /
CMD ["/s"]