Add a Release Workflow for GitHub Actions

.github/workflows/release.yml

@@ -0,0 +1,49 @@
+---
+name: release
+
+on:
+  release:
+    types: [prereleased, released]
+
+env:
+  ASSET_NAME: skeleton-aws-lambda.zip
+  PIP_CACHE_DIR: ~/.cache/pip
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - name: Store installed Python version
+        run: |
+          echo "::set-env name=PY_VERSION::"\
+          "$(python -c "import platform;print(platform.python_version())")"
+      - name: Cache lambda building environments
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.PIP_CACHE_DIR }}
+          key: "release-${{ runner.os }}-py${{ env.PY_VERSION }}-\
+            ${{ hashFiles('**/requirements.txt') }}"
+          restore-keys: |
+            release-${{ runner.os }}-py${{ env.PY_VERSION }}-
+            release-${{ runner.os }}-
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip wheel
+          pip install --upgrade --requirement requirements.txt
+      - name: Build environment
+        run: docker-compose build
+      - name: Generate lambda zip
+        run: docker-compose up
+      - name: Upload lambda zip as release asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: ${{ env.ASSET_NAME }}
+          asset_name: ${{ env.ASSET_NAME }}
+          asset_content_type: application/zip