ci: dont run github_pages on forks

Limit to not automatically run on forks and allow ad-hoc runs.

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

.github/workflows/github_pages.yml

@@ -3,26 +3,28 @@ on:
   push:
     branches:
       - master
+  workflow_dispatch:
 jobs:
   publish:
+    if: github.event_name != 'schedule' || github.repository_owner == 'nix-community'
     strategy:
       matrix:
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v31
-      with:
-        nix_path: nixpkgs=channel:nixos-unstable
-    - uses: cachix/cachix-action@v16
-      with:
-        name: nix-community
-        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-    - run: |
-        nix-build -A docs.html
-        cp -r result/share/doc/home-manager public
-    - name: Deploy
-      uses: peaceiris/actions-gh-pages@v4
-      with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        publish_dir: ./public
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v31
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@v16
+        with:
+          name: nix-community
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      - run: |
+          nix-build -A docs.html
+          cp -r result/share/doc/home-manager public
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./public