ARG CROSS_BASE_IMAGE FROM $CROSS_BASE_IMAGE RUN apt-get update -y && apt-get upgrade -y RUN apt-get install -y unzip && \ PB_REL="https://github.com/protocolbuffers/protobuf/releases" && \ curl -L $PB_REL/download/v3.15.8/protoc-3.15.8-linux-x86_64.zip -o protoc.zip && \ unzip protoc.zip -d /usr && \ chmod +x /usr/bin/protoc RUN apt-get install -y cmake clang-3.9 ENV PROTOC=/usr/bin/protoc