Migrate to multistaged Dockerfile for debian images.

docker-files/Dockerfile

@@ -1,34 +0,0 @@
-#
-# Glances Dockerfile (based on Ubuntu)
-#
-# https://github.com/nicolargo/glances
-#
-
-ARG ARCH=
-FROM ${ARCH}python:3-slim-buster
-
-# Install package
-# Must used calibre package to be able to run external module
-ENV DEBIAN_FRONTEND noninteractive
-RUN \
-  apt-get update           && \
-  apt-get install -y          \
-  curl              \
-  gcc               \
-  lm-sensors        \
-  wireless-tools    \
-  iputils-ping && \
-  rm -rf /var/lib/apt/lists/*
-
-# Force rebuild otherwise it could be cached without rerun
-ARG VCS_REF
-RUN pip install glances[all]
-
-# Define working directory.
-WORKDIR /glances
-
-# EXPOSE PORT (XMLRPC / WebUI)
-EXPOSE 61209 61208
-
-# Define default command.
-CMD python3 -m glances -C /glances/conf/glances.conf $GLANCES_OPT

docker-files/debian.Dockerfile

@@ -0,0 +1,56 @@
+#
+# Glances Dockerfile (based on Debian)
+#
+# https://github.com/nicolargo/glances
+#
+
+ARG ARCH
+FROM ${ARCH}python:3.9-slim-buster as build
+
+# Install package
+RUN apt-get update && \
+  apt-get install -y --no-install-recommends \
+  python3-dev \
+  curl \
+  gcc \
+  lm-sensors \
+  wireless-tools \
+  iputils-ping && \
+  apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Force rebuild otherwise it could be cached without rerun
+ARG VCS_REF
+RUN pip3 install --no-cache-dir --user glances[all]
+
+FROM build as additional-packages
+
+COPY *requirements.txt .
+
+RUN CASS_DRIVER_NO_CYTHON=1 pip3 install --no-cache-dir --user -r optional-requirements.txt
+
+
+#Create running image without any building dependency
+FROM ${ARCH}python:3.9-slim-buster as minimal
+
+RUN apt-get update && \
+  apt-get install -y --no-install-recommends \
+  curl              \
+  lm-sensors        \
+  wireless-tools    \
+  iputils-ping && \
+  apt-get clean && rm -rf /var/lib/apt/lists/*
+
+COPY --from=build /root/.local/bin /usr/local/bin/
+COPY --from=build /root/.local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages/
+
+# EXPOSE PORT (XMLRPC / WebUI)
+EXPOSE 61209 61208
+
+# Define default command.
+CMD python3 -m glances -C /glances/conf/glances.conf $GLANCES_OPT
+
+
+FROM minimal as full
+
+COPY --from=additional-packages /root/.local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages/
+