Add gh-pages deploy bot (#225)

* Add gh-pages deploy bot

* Add dependencies for gh-pages bot

* Add missing jupyterlab dependency

* Use pandoc Actions

* Minor fixes

* Test macOS environment

.github/workflows/gh-pages.yml

@@ -0,0 +1,65 @@
+name: Build & deploy documentation
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  deploy:
+    runs-on: macos-latest
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
+
+      - name: Install brew dependencies
+        run: |
+          brew update
+          brew install pandoc
+
+      - name: Upgrade pip
+        run: |
+          # install pip=>20.1 to use "pip cache dir"
+          python3 -m pip install --upgrade pip
+
+      - name: Install pip dependencies
+        run: |
+          # requirements for unittest
+          pip install numpy
+          pip install torch torchvision
+          pip install opencv-python pycocotools>=2.0.2 onnxruntime
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
+      - name: Get pip cache dir
+        id: pip-cache
+        run: echo "::set-output name=dir::$(pip cache dir)"
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.pip-cache.outputs.dir }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Build docs
+        run: |
+          cd docs
+          pip install --progress-bar off -r requirements.txt
+          make help
+          make html
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/build/html
+        if: github.event_name != 'pull_request'

docs/requirements.txt

@@ -1,4 +1,5 @@
 numpy
+jupyterlab
 sphinx==3.5.4
 insipid-sphinx-theme
-nbsphinx
+nbsphinx==0.8.7