FROM ubuntu:22.04 AS lindbergh-build RUN dpkg --add-architecture i386 \ && apt update \ && apt install -y --no-install-recommends \ build-essential \ gcc-multilib \ freeglut3-dev:i386 \ libsdl2-dev:i386 \ libfaudio-dev:i386 \ && apt clean \ && rm -rf /var/lib/apt/lists/* WORKDIR /lindbergh-loader COPY . . # Explicitly set the output directory RUN make && mkdir -p /output && cp -r ./build /output