Add Docker setup and document it in Readme (for macOS)

Dockerfile

+# Start with a base image that includes conda
+FROM continuumio/miniconda3
+
+# Set environment variables
+ENV CONDA_DEFAULT_ENV=fenicsx-env
+ENV PATH /opt/conda/envs/${CONDA_DEFAULT_ENV}/bin:$PATH
+ENV HOME /root
+
+# Create the environment and install packages
+RUN conda create --name ${CONDA_DEFAULT_ENV} python=3.12.3 -y && \
+    conda install -n ${CONDA_DEFAULT_ENV} -c conda-forge fenics-dolfinx=0.8.0 mpich=4.2.1 pyvista=0.43.10 matplotlib=3.8.4 numpy=1.26.4 scipy=1.14.0 gcc=12.4.0 sphinx=7.3.7 myst-parser=4.0.0 sphinx-copybutton=0.5.2 sphinx-rtd-theme=3.0.1 -y
+
+# Activate environment
+SHELL ["conda", "run", "-n", "fenicsx-env", "/bin/bash", "-c"]
+
+WORKDIR /root
+
+# Set the default environment on container start
+# ENTRYPOINT ["conda", "run", "-n", "fenicsx-env", "/bin/bash", "-c"]
+CMD ["bash"]

README.md

@@ -40,6 +40,13 @@ Use the "environment.yml" file to install all necessary environments
 conda env create -f environment.yml
 ```
 
+### macOS installation using Docker
+
+```
+docker compose build
+docker compose run solver
+```
+
 ## Usage
 
 Find the visualizations from the thesis and some extra calculations in the "examples" folder.

docker-compose.yml

+services:
+  solver:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - .:/root/solver
+    stdin_open: true  # Equivalent to -i for interactive mode
+    tty: true         # Equivalent to -t for a terminal interface
+    command: ["/bin/bash"]