Singularity MPICH image not based on docker image anymore

Containers/VirtualFluidsMPICH.def

 BootStrap: docker
-From: irmb/virtualfluids-python-deps-mpich
+From: ubuntu:20.04
 
 %files
     3rdParty 3rdParty
@@ -15,6 +15,19 @@ From: irmb/virtualfluids-python-deps-mpich
 
 
 %post
+    export DEBIAN_FRONTEND=noninteractive
+    apt-get update &&          \
+    apt-get install -y         \
+    build-essential            \
+    cmake=3.16.3-1ubuntu1      \
+    python3                    \
+    python3-dev                \
+    python3-pip                \
+    mpich                      \
+    libomp-dev
+    
+    pip3 install setuptools wheel
+
     export PYTHONPATH=Python
     python3 /setup.py install
 
@@ -29,4 +42,3 @@ From: irmb/virtualfluids-python-deps-mpich
 
 %apprun poisueille
     python3 /Python/poiseuille/poiseuille_hpc.py
-