chore(cd): add tag and release note script

.github/workflows/tag.yml

@@ -0,0 +1,48 @@
+name: Release CD
+
+on:
+  push:
+    tags:
+      - "v*"  # push to version tags trigger the build
+
+#on:
+#  push:
+#    branches-ignore:
+#      - '**'  # temporally disable this action
+
+jobs:
+  update-doc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: benc-uk/workflow-dispatch@v1
+        with:
+          workflow: Manual Docs Build
+          token: ${{ secrets.JINA_DEV_BOT }}
+          inputs: '{ "release_token": "${{ env.release_token }}", "triggered_by": "TAG"}'
+        env:
+          release_token: ${{ secrets.FINETUNER_RELEASE_TOKEN }}
+
+  create-release:
+    needs: update-doc
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          ref: 'main'
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - run: |
+          python scripts/get-last-release-note.py
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: 💫 Patch ${{ github.ref }}
+          body_path: 'tmp.md'
+          draft: false
+          prerelease: false

scripts/get-last-release-note.py

@@ -0,0 +1,13 @@
+## under jina root dir
+# python scripts/get-last-release-note.py
+## result in root/tmp.md
+
+with open('CHANGELOG.md') as fp:
+    n = []
+    for v in fp:
+        if v.startswith('## Release Note'):
+            n.clear()
+        n.append(v)
+
+with open('tmp.md', 'w') as fp:
+    fp.writelines(n)