anchor.diff:                                            file \
                                             libssl-dev \
                                             pkg-config \
  +                                          libmysqlclient-dev \
       && curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST_VERSION} \
       && rustup target add "${ARCHITECTURE}" \
       && apt-get remove -y --auto-remove curl \
  
positive.code: WORKDIR /app/src
  COPY Cargo.toml Cargo.lock ./
  COPY cli/Cargo.toml ./cli/Cargo.toml
  RUN cargo fetch --locked -v
  
  COPY ./ ./
  
negative.code: FROM japaric/x86_64-unknown-linux-musl:v0.1.10 as builder
  ENV PATH "/root/.cargo/bin:${PATH}"
  
  ARG RUST_VERSION=nightly-2017-09-21
  