Feature: use container for ci workflow and add codecov report

.github/.codecov.yml

@@ -0,0 +1,10 @@
+comment:
+  layout: "reach,diff,flags,tree"
+  behavior: default
+  require_changes: false
+
+coverage:
+  status:
+    project:
+      default:
+        threshold: 5%

.github/workflows/ci.yml

@@ -13,11 +13,20 @@ jobs:
   compile-with-bazel:
     runs-on:
       group: Default
-      labels: trpc-cpp-plugins-ci
+      labels: trpc-ecosystem-cpp-ci
+    container:
+      image: ghcr.io/trpc-ecosystem/trpc-cpp-jaeger-gcc8-centos7:0.1.0
     steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Test
-      run: |
-           ./clean.sh
-           bazel test //trpc/...
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Test
+        run: |
+             export PATH=/opt/rh/devtoolset-8/root/usr/bin:$PATH
+             ./clean.sh
+             bazel coverage //trpc/... --test_output=all --coverage_report_generator="@bazel_tools//tools/test/CoverageOutputGenerator/java/com/google/devtools/coverageoutputgenerator:Main" --combined_report=lcov --nocache_test_results
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v3
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        with:
+          file: bazel-out/_coverage/_coverage_report.dat

.github/workflows/cla.yml

@@ -0,0 +1,31 @@
+name: "CLA Assistant"
+on:
+  issue_comment:
+    types: [created]
+  pull_request_target:
+    types: [opened, synchronize, reopened]
+
+# explicitly configure permissions, in case your GITHUB_TOKEN workflow permissions are set to read-only in repository settings
+permissions:
+  actions: write
+  contents: write
+  pull-requests: write
+  statuses: write
+
+jobs:
+  CLAAssistant:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "CLA Assistant"
+        if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I hereby sign the CLA') || github.event_name == 'pull_request_target'
+        uses: contributor-assistant/github-action@v2.3.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PERSONAL_ACCESS_TOKEN: ${{ secrets.CLA_DATABASE_ACCESS_TOKEN }}
+        with:
+          remote-organization-name: trpc-group
+          remote-repository-name: cla-database
+          path-to-signatures: 'signatures/${{ github.event.repository.name }}-${{ github.repository_id }}/cla.json'
+          path-to-document: 'https://github.com/trpc-group/cla-database/blob/main/Tencent-Contributor-License-Agreement.md'
+          # branch should not be protected
+          branch: 'main'