anchor.diff:  ARG RUST_VERSION=1.60.0
   # This should match the version in bazelish.sh.
   ARG BAZELISK_VERSION=v1.11.0
  +# This should match the version in ci/install-package-dependencies.sh
  +ARG GCC_VERION=9
   
   # Main container image.
   FROM ubuntu:18.04 AS opentitan
  
positive.code:         screen \
          dc \
          time \
      && apt-get clean; \
      rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/doc/*
  
  # RISC-V device toolchain
  COPY util/get-toolchain.py /tmp/get-toolchain.py
  
negative.code: ARG RISCV_TOOLCHAIN_TAR_VERSION
  ARG RUST_VERSION
  ARG BAZELISK_VERSION
  ARG GCC_VERSION
  
  LABEL version="1.0"
  LABEL description="OpenTitan development container."
  