Publish docs (#15)

Author: rossmotley

.github/workflows/main.yaml

@@ -40,3 +40,48 @@ jobs:
       - name: Check source code licenses
         run: |
           docker run --platform=linux/amd64 -v ${PWD}:/src ghcr.io/google/addlicense -v -check -l BSD-2-Clause -c "ChipFlow" -s=only -ignore **/__init__.py **/*.py
+
+  build-docs:
+    needs: test
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up PDM
+        uses: pdm-project/setup-pdm@v4
+        with:
+          python-version: 3.9
+      - name: Install deps
+        run: pdm install
+      - name: Build docs
+        run: pdm run document
+      - name: Upload docs artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: docs
+          path: docs/_build
+
+  publish-docs:
+    needs: build-docs
+    if: ${{ github.repository == 'chipflow/chipflow-lib' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Download docs artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: docs
+          path: docs/
+      - name: Publish "latest" docs
+        if: ${{ github.event_name == 'push' && github.event.ref == 'refs/heads/main' }}
+        uses: JamesIves/github-pages-deploy-action@releases/v4
+        with:
+          repository-name: chipflow/chipflow.github.io
+          ssh-key: ${{ secrets.PAGES_DEPLOY_KEY }}
+          branch: main
+          folder: docs/
+          target-folder: chipflow-lib/latest/
+