My Dockerfile for a Rust Project

Dockerfile

 FROM rustdocker/rust:nightly as cargo-build 
 RUN apt-get update 
 RUN apt-get install musl-tools -y 
 RUN /root/.cargo/bin/rustup target add x86_64-unknown-linux-musl 
 RUN USER=root /root/.cargo/bin/cargo new --bin material 
 WORKDIR /material 
 COPY ./Cargo.toml ./Cargo.toml 
 COPY ./Cargo.lock ./Cargo.lock 
 RUN RUSTFLAGS=-Clinker=musl-gcc /root/.cargo/bin/cargo build --release --target=x86_64-unknown-linux-musl --features vendored 
 RUN rm -f target/x86_64-unknown-linux-musl/release/deps/material* 
 RUN rm src/*.rs 
 COPY ./src ./src 
 RUN RUSTFLAGS=-Clinker=musl-gcc /root/.cargo/bin/cargo build --release --target=x86_64-unknown-linux-musl --features vendored 
 FROM alpine:latest 
 COPY --from=cargo-build /auth/target/x86_64-unknown-linux-musl/release/material . 
 CMD ["./material"]