Fix docs

.github/workflows/docs.yml

@@ -7,13 +7,6 @@ on:
     tags:
       - '*'
 
-env:
-  COMMIT_EMAIL: [email protected]
-  MAKE_TARGET: -C python
-  OWNER: tskit-dev
-  REPO: tskit
-  REQUIREMENTS: python/requirements/CI-docs/requirements.txt
-
 jobs:
   build-deploy-docs:
     name: Docs
@@ -39,16 +32,24 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ${{ env.CONDA }}/envs
-          key: conda-${{ runner.os }}--${{ runner.arch }}--${{ hashFiles(env.REQUIREMENTS) }}-${{ env.CACHE_NUMBER }}
+          key: conda-${{ runner.os }}--${{ runner.arch }}--${{ hashFiles('requirements/CI-docs/requirements.txt') }}-${{ env.CACHE_NUMBER }}
         env:
           CACHE_NUMBER: 0
         id: cache
 
       - name: Update environment
         run: |
-          mamba install -y python=3.12 doxygen pip
-          pip install -r ${{ env.REQUIREMENTS }}
+          mamba install -y python=3.12 pip
+          pip install -r requirements/CI-docs/requirements.txt
         if: steps.cache.outputs.cache-hit != 'true'
 
       - name: Build Docs
         run: make -C docs
+
+      - name: Trigger docs site rebuild
+        if: github.ref == 'refs/heads/main'
+        run: |
+          curl -X POST https://api.github.com/repos/tskit-dev/tskit-site/dispatches \
+                    -H 'Accept: application/vnd.github.everest-preview+json' \
+                    -u AdminBot-tskit:${{ secrets.ADMINBOT_TOKEN }} \
+                    --data '{"event_type":"build-docs"}'