Work on docker support.

pip was not the default script in the virtualenv in the docker image (pip3 was).
So we had to use "ensurepip" as recommended by the pip team.

The Dockerfile was a bit simplified.

Dockerfile

@@ -1,30 +1,24 @@
 # Get the base Python image
 FROM python:latest
 
+# 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
-WORKDIR /code
+USER msspec
+RUN mkdir -p /opt/msspec/code
+WORKDIR /opt/msspec/code
 
 # Fetch the code
 RUN git clone --branch devel https://git.ipr.univ-rennes1.fr/epsi/msspec_python3.git .
+#COPY --chown=msspec:msspec . .
 
-# Install system dependencies
-RUN apt-get update && apt-get install -y virtualenv gfortran libgtk-3-dev
-    
 # Install msspec
-ENV PATH=/opt/bin:$PATH
-RUN make install VERBOSE=1 INSTALL_PREFIX=/opt
-
-# Add a non-privileged user
-RUN useradd -ms /bin/bash msspec
-USER msspec
-WORKDIR /home/msspec
-
-# Customize a bit the prompt and load the msspec virtualenv
-RUN echo "alias idle=\"python -m idlelib.idle 2>/dev/null\"" >> .bashrc && \
-    echo "export PS1=\"\w\$ \"" >> .bashrc && \
-    echo "$(msspec -e)" >> .bashrc && \
-    mkdir data && \
-    cp /code/doc/source/tutorials/copper/Cu_simple.py data/example.py
+ENV PATH=/opt/msspec/.local/bin:$PATH
+RUN make install VERBOSE=1
 
 # Run the msspec frontend command on startup
-ENTRYPOINT ["/bin/bash"]
+ENTRYPOINT ["msspec"]

Makefile

@@ -11,7 +11,7 @@ pybinding:
 venv:
 ifeq ($(NO_VENV),0)
 	@virtualenv --python=$(PYTHON_EXE) --prompt="(msspec-$(VERSION)) " $(VENV_PATH)
-	@$(INSIDE_VENV) pip install --upgrade pip && pip install -r src/pip.freeze
+	@$(INSIDE_VENV) python -m ensurepip --upgrade --default-pip && pip install -r src/pip.freeze
 endif