Update ci.yml

Author: sbryngelson

.github/workflows/ci.yml

@@ -52,7 +52,17 @@ jobs:
           echo "export PATH=$PATH:/usr/lib64/openmpi/bin/" >> $GITHUB_ENV
         
       - name: Build
+        if:   matrix.os == 'macos-latest'
+        run:  /bin/bash mfc.sh build -j $(nproc)
+        
+      - name: Build
+        if:   matrix.os == 'ubuntu-latest'
+        run:  /bin/bash mfc.sh build -j $(nproc)
+        
+      - name: Build
+        if:   matrix.os == 'self-hosted'
         run:  |
+          export PATH=$PATH:/usr/lib64/openmpi/bin/
           which mpif90
           /bin/bash mfc.sh build -j $(nproc)