content: FROM ubuntu:20.04
  
  RUN apt-get update \
      && apt install --no-install-recommends -y \
          ca-certificates curl git python3-pip \
          clang make gcc g++ libssl-dev pkg-config protobuf-compiler \
      && pip3 install --upgrade pip \
      && pip3 install cmake --upgrade \
      && curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain none \
      && git config --global --add safe.directory /build
  
  ENV PATH="$PATH:/root/.cargo/bin"
  
  WORKDIR /build
  