Merge pull request mit-ll-responsible-ai#65 from mit-ll-responsible-a…

…i/docs-workflow

add github workflow for publishing docs

.github/workflows/publish_docs.yml

@@ -0,0 +1,48 @@
+name: github pages
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
+
+      - name: Upgrade pip
+        run: |
+          # install pip=>20.1 to use "pip cache dir"
+          python3 -m pip install --upgrade pip
+      - 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: Install package
+        run: python3 -m pip install .
+
+      - name: Install docs dependencies
+        run: pip install -r ./docs/requirements.txt
+
+      - name: Run sphinx
+        run: (cd ./docs/ && make html)
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          destination_dir: ./docs
+          publish_dir: ./docs/build/html