add build to flake, update ci to build on changes to conf

.forgejo/workflows/build.yaml

@@ -8,6 +8,7 @@ on:
       - flake.*
       - src/**/*
       - .forgejo/**/*
+      - mkdocs.yml  
 
 jobs:
   # Build it locally, this helps caching for later

flake.nix

@@ -26,6 +26,11 @@
           pkgs.python3Packages.mkdocs
           pkgs.python3Packages.mkdocs-material
         ];
+          shellHook = ''
+          echo "Building wiki"
+          mkdocs build
+          mkdocs serve
+          '';
       };
     }
   );