Combine doc actions in single yml

Author: spoorcc

.github/workflows/docs.yml

@@ -1,12 +1,20 @@
 name: "Docs"
+
 on:
-- pull_request
+  push:
+    branches:
+      - main
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+  pull_request:
+    types: [opened, synchronize, reopened]
 
 permissions:
   contents: read
 
 jobs:
   docs:
+    name: Documentation
     runs-on: ubuntu-latest
     steps:
     - name: Harden the runner (Audit all outbound calls)
@@ -22,10 +30,42 @@ jobs:
         python-version: '3.13'
 
     - name: Install documentation requirements
-      run: "pip install .[docs] && pip install sphinx_design"
+      run: |
+          pip install .[docs]
+          pip install sphinx_design
 
     - name: Build docs
       run: "make -C doc html"
 
-    - name: Build landing-page
-      run: "make -C doc/landing-page html"
+  landing-page:
+    name: Landing page
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@20cf305ff2072d973412fa9b1e3a4f227bda3c76 # v2.14.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v5.0.0
+
+      - name: Setup Python
+        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+        with:
+          python-version: "3.13"
+
+      - name: Install dependencies
+        run: |
+          pip install .[docs]
+          pip install sphinx_design
+
+      - name: Build landing-page
+        run: "make -C doc/landing-page html"
+
+      - name: Publish
+        if: github.ref == 'refs/heads/main'
+        uses: tsunematsu21/actions-publish-gh-pages@c04b531c52b8f9d25c596bc6e6a7ddc116b2f3f8 # v1.0.2
+        with:
+          dir: doc/landing-page/_build/html
+          repo: dfetch-org/dfetch-org.github.io
+          branch: main
+          token: ${{ secrets.GH_DFETCH_ORG_DEPLOY }}