Add multistage build

To reduce the size of the Docker image. We use a multistage
build based on an alpine distro, the size is reduced by a
factor of 7.

Dockerfile

@@ -1,24 +1,102 @@
 # Get the base Python image
-FROM python:latest
+FROM alpine:edge AS builder
+
+# Variables
+ARG branch="devel"
+ARG login="" password=""
+ARG folder=/opt/msspec user=msspec
 
 # Install system dependencies
-RUN apt-get update && apt-get install -y virtualenv gfortran libgtk-3-dev nano
-
-# Add a non-privileged user
-RUN useradd -ms /bin/bash -d /opt/msspec msspec
-
-# Set the working directory in the container
-USER msspec
-RUN mkdir -p /opt/msspec/code
-WORKDIR /opt/msspec/code
+# tools
+RUN apk add bash git make gfortran python3 
+# headers
+RUN apk add python3-dev lapack-dev musl-dev
+# python packages
+RUN apk add py3-virtualenv py3-pip py3-numpy-dev py3-h5py py3-lxml py3-matplotlib py3-numpy py3-pandas py3-cairo py3-scipy py3-setuptools_scm
+RUN apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/testing py3-wxpython
+RUN pip install ase pint terminaltables ipython
+# for GUI
+RUN apk add ttf-droid adwaita-icon-theme
+RUN apk add build-base
 
 # Fetch the code
-RUN git clone https://git.ipr.univ-rennes1.fr/epsi/msspec_python3.git .
-#COPY --chown=msspec:msspec . .
+RUN mkdir -p ${folder}/code
+WORKDIR ${folder}/code
+RUN git clone --branch ${branch} https://${login}:${password}@git.ipr.univ-rennes1.fr/epsi/msspec_python3.git .
 
+# Build
+RUN make pybinding NO_VENV=1 PYTHON=python3 VERBOSE=1
+RUN make -C src sdist PYTHON=python3 NO_VENV=1 VENV_PATH=${folder}/.local/src/msspec_venv && \
+    pip install src/dist/msspec*tar.gz
+
+# Add a non-privileged user
+RUN adduser -D -s /bin/bash -h ${folder} ${user}
+
+# Set the working directory in the container
+USER ${user}
+
+RUN virtualenv --system-site-packages ${folder}/.local/src/msspec_venv
+RUN make -C src frontend PYTHON=python3 NO_VENV=1 VENV_PATH=${folder}/.local/src/msspec_venv
+
+
+
+FROM alpine:edge
+# Variables
+ARG folder=/opt/msspec user=msspec
+# Install system dependencies
+RUN apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/testing \
+#  hdf5-hl cairo openblas lapack libxml2 libxslt libzlf wxwidgets-gtk3 openjpeg libimagequant \
+   nano \
+   py3-virtualenv \
+   lapack \
+   bash \
+#  git \
+#  make \
+#  gfortran \
+   python3 \
+#   ttf-droid \
+   ttf-liberation \
+   adwaita-xfce-icon-theme \
+#  python3-dev \
+#  lapack-dev \
+#  musl-dev \
+#  py3-virtualenv \
+   py3-pip \
+#  py3-numpy-dev \
+   py3-h5py \
+   py3-lxml \
+   py3-matplotlib \
+   py3-numpy \
+   py3-pandas \
+   py3-cairo \
+   py3-scipy \
+   py3-setuptools_scm \
+   py3-wxpython \
+   && pip install \
+   ase \
+   pint \
+   terminaltables \
+   ipython \
+   && pip cache purge \
+   # Add a non-privileged user
+   && adduser -D -s /bin/bash -h ${folder} ${user}
+
+# Set the working directory in the container
+USER ${user}
+WORKDIR ${folder}
 # Install msspec
-ENV PATH=/opt/msspec/.local/bin:$PATH
-RUN make install VERBOSE=1
+#COPY --from=builder ${folder}/.local ${folder}/.local
+#COPY --from=builder /usr/lib/python3.10/site-packages /usr/lib/python3.10/site-packages
+
+COPY --from=builder ${folder}/code/src/dist/msspec*tar.gz msspec.tar.gz
+RUN virtualenv --system-site-packages .local/src/msspec_venv && \
+    . .local/src/msspec_venv/bin/activate && \
+    pip install msspec.tar.gz && \
+    rm -f msspec.tar.gz && \
+    mkdir -p .local/bin
+
+COPY --from=builder ${folder}/.local/bin/msspec .local/bin/msspec
+ENV PATH=${folder}/.local/bin:$PATH
 
 # Run the msspec frontend command on startup
 ENTRYPOINT ["msspec"]