Add alpine multi-staged build

.github/workflows/build.yml

@@ -95,7 +95,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ['debian']
+        os: ['debian', 'alpine']
         tag: ${{ fromJson(needs.create_Docker_builds.outputs.tags) }}
     steps:
       - name: Checkout

docker-files/alpine.Dockerfile

+#
+# Glances Dockerfile (based on Alpine)
+#
+# https://github.com/nicolargo/glances
+#
+
+FROM python:3.9-alpine as build
+
+RUN apk add --no-cache \
+  python3-dev \
+  musl-dev \
+  linux-headers \
+  build-base \
+  curl \
+  lm-sensors \
+  wireless-tools \
+  iputils
+
+
+FROM build as remoteInstall
+# Install the dependencies beforehand to make them cacheable
+COPY requirements.txt .
+RUN pip3 install --no-cache-dir --user -r requirements.txt
+
+# Force install otherwise it could be cached without rerun
+ARG CHANGING_ARG
+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
+
+
+FROM build as dev
+
+COPY --from=additional-packages /root/.local/lib/python3.9/site-packages /usr/lib/python3.9/site-packages/
+COPY . /glances
+
+# EXPOSE PORT (XMLRPC / WebUI)
+EXPOSE 61209 61208
+
+WORKDIR /glances
+
+# Define default command.
+CMD python3 -m glances -C /glances/conf/glances.conf $GLANCES_OPT
+
+
+#Create running images without any building dependency
+FROM python:3.9-alpine as minimal
+
+RUN apk add --no-cache \
+  curl \
+  lm-sensors \
+  wireless-tools \
+  iputils
+
+COPY --from=remoteInstall /root/.local/bin /usr/local/bin/
+COPY --from=remoteInstall /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/lib/python3.9/site-packages/

docker-files/devel-alpine/Dockerfile

-#
-# Glances Dockerfile based on Alpine OS
-#
-# https://github.com/nicolargo/glances
-#
-
-# Pull base image.
-FROM alpine
-
-# Install Glances (develop branch)
-RUN apk add python3 py3-psutil py3-bottle docker-py git
-RUN git clone -b develop https://github.com/nicolargo/glances.git
-
-# Define working directory.
-WORKDIR /glances
-
-# EXPOSE PORT (For XMLRPC)
-EXPOSE 61209
-
-# EXPOSE PORT (For Web UI)
-EXPOSE 61208
-
-# Define default command.
-CMD /usr/bin/python3 -m glances -C /glances/conf/glances.conf $GLANCES_OPT