Dockerfile-4stage

### Create docker image from python3.9-slim
#
# Set up base venv image to start the build
FROM python:3.9-slim AS venv-image
# Create python venv and add it to PATH
RUN python -m venv /ledfx/venv
ENV PATH="/ledfx/venv/bin:$PATH"
RUN python -m pip install --no-cache-dir --upgrade pip wheel setuptools
# Install dependencies and ledfx, remove unneeded packages
RUN apt-get update && apt-get install -y --no-install-recommends \
        alsa-utils \
        libatlas3-base \
        portaudio19-dev \
        pulseaudio && rm -rf /var/lib/apt/lists/*
RUN apt-get clean -y 
RUN apt-get autoremove -y


### Create docker image from venv-image as compile-image to speed up builds
#
FROM venv-image AS compile-image
RUN apt-get update && apt-get install -y --no-install-recommends \
        gcc \
        git \
        libc-dev \
        nodejs \
        npm \
        python3-dev && rm -rf /var/lib/apt/lists/*

### Create docker image from compile-image to pull and build from github
#
FROM compile-image AS build-image
COPY --from=venv-image /ledfx/venv /ledfx/venv
ENV PATH="/ledfx/venv/bin:$PATH"
RUN pip install --no-cache-dir git+https://github.com/LedFx/LedFx@dev

# Create docker image from venv-image to build dist-image
#
FROM venv-image AS dist-image

COPY --from=build-image /ledfx/venv /ledfx/venv
ENV PATH="/ledfx/venv/bin:$PATH"

RUN rm -rf /var/lib/apt/lists/*
RUN useradd -l --create-home ledfx --groups audio
WORKDIR /home/ledfx
USER ledfx

EXPOSE 8888/tcp
EXPOSE 5353/udp
ENTRYPOINT [ "ledfx"]