Update deploy-docs.yml

Author: praynaud

.github/workflows/deploy-docs.yml

@@ -7,19 +7,27 @@ jobs:
   Build:
     runs-on: ubuntu-22.04
 
+    env:
+      FC: gfortran
+      GCC_V: 12
+
     steps:
     - name: Checkout code
       uses: actions/checkout@v2
 
     - name: Install Dependencies Ubuntu
       run: |
         sudo apt-get update
-        sudo apt install -y python3-dev python3 build-essential graphviz gfortran-12
-        sudo pip install ford
+        sudo apt install -y gfortran-${GCC_V} python3-dev python3 build-essential numdiff graphviz
+        sudo pip install ford markdown==3.3.4
 
     - name: Build Developer Documenation
       run: |
-        ford doc-generator.md
+        cd doc
+        # Turn warnings into errors
+        ford doc-generator.md > ford_output.txt
+        cat ford_output.txt; if grep -q -i Warning ford_output.txt; then exit 1; fi
+        cp ../README.md html
 
     - name: Upload Documentation
       uses: actions/upload-artifact@v2