# initialize from the image FROM debian:9 # install build tools and dependencies RUN dpkg --add-architecture i386 && \ apt-get update && \ apt-get install -y \ build-essential curl unzip git python3 python3-pip gcc-arm-none-eabi libnewlib-arm-none-eabi libsdl2-dev:i386 libsdl2-image-dev:i386 gcc-multilib ENV PROTOBUF_VERSION=3.4.0 RUN curl -LO "https://github.com/google/protobuf/releases/download/v${PROTOBUF_VERSION}/protoc-${PROTOBUF_VERSION}-linux-x86_64.zip" RUN unzip "protoc-${PROTOBUF_VERSION}-linux-x86_64.zip" -d /usr RUN pip3 install "protobuf==${PROTOBUF_VERSION}" ecdsa RUN ln -s python3 /usr/bin/python