Merge pull request #1432 from spotify/bil/techdocs-format-workflow

techdocs: create initial github workflow for CI

.github/workflows/techdocs.yml

@@ -0,0 +1,35 @@
+name: TechDocs
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/techdocs.yml'
+      - 'packages/techdocs-cli/**'
+      - 'plugins/techdocs/**'
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        python-version: [3.7]
+
+    env:
+      TECHDOCS_CORE_PATH: ./plugins/techdocs/mkdocs/container/techdocs-core
+
+    name: Python ${{ matrix.node-version }} on ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+
+      # Lint Python code for techdocs-core package
+      - name: prepare python environment
+        run: |
+          python3 -m pip install --index-url https://pypi.org/simple/ setuptools
+          python3 -m pip install --upgrade pip
+          python3 -m pip install --index-url https://pypi.org/simple/ -r $TECHDOCS_CORE_PATH/requirements.txt
+
+      - name: lint techdocs-core package
+        run: |
+          python3 -m black --check $TECHDOCS_CORE_PATH/src