content: #
  # Glances Dockerfile (based on Alpine)
  #
  # https://github.com/nicolargo/glances
  #
  
  # Note: ENV is for future running containers. ARG for building your Docker image.
  
  # WARNING: the Alpine image version and Python version should be set.
  # Alpine 3.18 tag is a link to the latest 3.18.x version.
  # Be aware that if you change the Alpine version, you may have to change the Python version.
  
  ARG IMAGE_VERSION=3.20
  ARG PYTHON_VERSION=3.12
  
  ##############################################################################
  # Base layer to be used for building dependencies and the release images
  FROM alpine:${IMAGE_VERSION} as base
  
  # Upgrade the system
  RUN apk update \
    && apk upgrade --no-cache
  
  # Install the minimal set of packages
  RUN apk add --no-cache \
    python3 \
    curl \
    lm-sensors \
    wireless-tools \
    smartmontools \
    iputils \
    tzdata
  
  ##############################################################################
  # BUILD Stages
  ##############################################################################
  # BUILD: Base image shared by all build images
  FROM base as build
  ARG PYTHON_VERSION
  
  RUN apk add --no-cache \
    python3-dev \
    py3-pip \
    py3-wheel \
    musl-dev \
    linux-headers \
    build-base \
    libzmq \
    zeromq-dev \
    # Required for 'cryptography' dependency of optional requirement 'cassandra-driver' \
    # Refer: https://cryptography.io/en/latest/installation/#alpine \
    # `git` required to clone cargo crates (dependencies)
    git \
    gcc \
    cargo \
    pkgconfig \
    libffi-dev \
    openssl-dev \
    cmake # Issue:  https://github.com/nicolargo/glances/issues/2735
  
  RUN python${PYTHON_VERSION} -m venv venv-build
  RUN /venv-build/bin/python${PYTHON_VERSION} -m pip install --upgrade pip
  
  RUN python${PYTHON_VERSION} -m venv venv-build
  RUN /venv-build/bin/python${PYTHON_VERSION} -m pip install --upgrade pip
  
  RUN python${PYTHON_VERSION} -m venv --without-pip venv
  
  COPY requirements.txt docker-requirements.txt webui-requirements.txt optional-requirements.txt ./
  
  ##############################################################################
  # BUILD: Install the minimal image deps
  FROM build as buildMinimal
  ARG PYTHON_VERSION
  
  RUN /venv-build/bin/python${PYTHON_VERSION} -m pip install --target="/venv/lib/python${PYTHON_VERSION}/site-packages" \
      -r requirements.txt \
      -r docker-requirements.txt \
      -r webui-requirements.txt
  
  ##############################################################################
  # BUILD: Install all the deps
  FROM build as buildFull
  ARG PYTHON_VERSION
  
  # Required for optional dependency cassandra-driver
  ARG CASS_DRIVER_NO_CYTHON=1
  # See issue 2368
  ARG CARGO_NET_GIT_FETCH_WITH_CLI=true
  
  RUN /venv-build/bin/python${PYTHON_VERSION} -m pip install --target="/venv/lib/python${PYTHON_VERSION}/site-packages" \
      -r requirements.txt \
      -r optional-requirements.txt
  
  ##############################################################################
  # RELEASE Stages
  ##############################################################################
  # Base image shared by all releases
  FROM base as release
  ARG PYTHON_VERSION
  
  # Copy source code and config file
  COPY ./docker-compose/glances.conf /etc/glances/glances.conf
  COPY ./glances/. /app/glances/
  
  # Copy binary and update PATH
  COPY docker-bin.sh /usr/local/bin/glances
  RUN chmod a+x /usr/local/bin/glances
  ENV PATH="/venv/bin:$PATH"
  
  # Copy binary and update PATH
  COPY docker-bin.sh /usr/local/bin/glances
  RUN chmod a+x /usr/local/bin/glances
  ENV PATH="/venv/bin:$PATH"
  
  # EXPOSE PORT (XMLRPC / WebUI)
  EXPOSE 61209 61208
  
  # Define default command.
  WORKDIR /app
  CMD /venv/bin/python3 -m glances $GLANCES_OPT
  
  ################################################################################
  # RELEASE: minimal
  FROM release as minimal
  
  COPY --from=buildMinimal /venv /venv
  
  ################################################################################
  # RELEASE: full
  FROM release as full
  
  RUN apk add --no-cache libzmq
  
  COPY --from=buildFull /venv /venv
  
  ################################################################################
  # RELEASE: dev - to be compatible with CI
  FROM full as dev
  
  # Forward access and error logs to Docker's log collector
  RUN ln -sf /dev/stdout /tmp/glances-root.log \
      && ln -sf /dev/stderr /var/log/error.log