Build docs in CI

Author: benjeffery

.github/workflows/docs.yml

@@ -0,0 +1,34 @@
+name: Build Docs
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+    tags:
+      - '*'
+
+jobs:
+  build-deploy-docs:
+    name: Docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@0.12.1
+        with:
+          access_token: ${{ github.token }}
+
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+          cache: 'pip'
+
+      - name: Create venv and install deps
+        run: |
+          pip install --upgrade pip wheel
+          pip install -r docs/requirements.txt
+
+      - name: Build Docs
+        run: |
+          make -C docs