add publish workflow

Author: jakbin

.github/workflows/publish.yml

@@ -0,0 +1,39 @@
+name: Python package
+
+on:
+  push:
+    paths:
+      - filebrowser/__init__.py
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Set up Python
+      run: |
+        sudo apt update
+        sudo apt install python3 python3-pip -y
+        python -m pip install --upgrade pip
+
+    - name: Install dependencies
+      run: |
+        python -m pip install -r requirements.txt
+        pip install setuptools wheel twine flake8
+
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
+    - name: Build and publish
+      env:
+        TWINE_USERNAME: __token__
+        TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
+      run: |
+        python setup.py sdist bdist_wheel
+        twine upload dist/*