Publish docs using GHA

Author: danielballan

.github/workflows/docs.yml

@@ -0,0 +1,81 @@
+name: CD
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+  release:
+    types:
+      - published
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  # Many color libraries just need this to be set to any value, but at least
+  # one distinguishes color depth, where "3" -> "256-bit color".
+  FORCE_COLOR: 3
+
+jobs:
+  docs-build:
+    name: Documentation build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v7
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install
+        shell: bash -l {0}
+        run: source continuous_integration/scripts/install.sh
+
+      - name: Install docs requirements
+        shell: bash -l {0}
+        run: |
+          set -vxeuo pipefail
+          python -m pip install -r requirements-docs.txt
+          python -m pip list
+
+      - name: Build HTML
+        run: sphinx-build docs docs/_build/html
+
+      - name: Upload HTML as GitHub artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs/_build/html
+
+  docs-publish:
+    name: Deploy documentation to GitHub Pages
+    runs-on: ubuntu-latest
+    needs: docs-build
+    if: ${{ github.ref_name == 'main' }}
+
+    # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Setup GitHub Pages
+        uses: actions/configure-pages@v5
+
+      - name: Deploy HTML to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4