Bootstrap: docker
From: ubuntu:latest

%files
   openmp_example.c  /opt

%environment
    export OMPI_DIR=/home0/opt/openmpi
    export SINGULARITY_OMPI_DIR=$OMPI_DIR
    export SINGULARITYENV_APPEND_PATH=$OMPI_DIR/bin
    export SINGULAIRTYENV_APPEND_LD_LIBRARY_PATH=$OMPI_DIR/lib

%post
    echo "Installing required packages..."
    apt-get update && apt-get install -y wget git bash gcc gfortran g++ make file

    echo "Compiling the MPI application..."
    cd /opt  && gcc -o openmp_example  -fopenmp  openmp_example.c