Dockerfile addition

Author: niravshah241

Dockerfile

@@ -1,10 +1,15 @@
+# Pull doflinx 0.7.3 docker image
 FROM dolfinx/dolfinx:v0.7.3
 
+# Set work directory
 RUN mkdir -p /home/app
 WORKDIR /home/app
 
+# Copy package files
 COPY demo . 
 
+# Install MDFEniCSx
 RUN pip install git+https://github.com/niravshah241/MDFEniCSx.git
 
+# Keep container alive
 CMD ["sleep", "infinity"]