consolidate jobs

.github/workflows/build.yml

@@ -40,3 +40,36 @@ jobs:
         COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
       run: |
         coveralls
+
+  docs:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        persist-credentials: false
+    - name: Set up Python 3.x
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        pip install -r requirements-docs.txt
+        sudo apt update -y && sudo apt install -y latexmk texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended dvipng
+    - name: Install pyDeltaRCM
+      run: |
+        python setup.py install
+    - name: Build and test documentation
+      run: |
+        (cd docs && make docs)
+    - name: Deploy to GitHub Pages
+      uses: JamesIves/github-pages-deploy-action@3.5.5
+      if: ${{ github.event_name == 'push' && github.ref == 'develop' }}
+      with:
+          ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          BRANCH: gh-pages
+          FOLDER: docs/build/html
+          GIT_CONFIG_NAME: deltarcm-helper