bpo-39041: Add GitHub Actions badge to README.rst (GH-17628)

Also skip build for doc-only changes and enable on push

Author: zooba

.github/workflows/build.yml

@@ -1,14 +1,16 @@
 name: Tests
 
 on:
- #push:
- # branches:
- # - master
- # - 3.8
- # - 3.7
- # paths-ignore:
- # - 'Doc/**'
- # - 'Misc/**'
+ push:
+ branches:
+ - master
+ - 3.8
+ - 3.7
+ paths-ignore:
+ - 'Doc/**'
+ - 'Misc/**'
+ - '**/*.md'
+ - '**/*.rst'
  pull_request:
  branches:
  - master
@@ -17,6 +19,8 @@ on:
  paths-ignore:
  - 'Doc/**'
  - 'Misc/**'
+ - '**/*.md'
+ - '**/*.rst'
 
 jobs:
  build_win32:

README.rst

@@ -5,6 +5,10 @@ This is Python version 3.9.0 alpha 1
  :alt: CPython build status on Travis CI
  :target: https://travis-ci.org/python/cpython
 
+.. image:: https://github.com/python/cpython/workflows/Tests/badge.svg
+ :alt: CPython build status on GitHub Actions
+ :target: https://github.com/python/cpython/actions
+
 .. image:: https://dev.azure.com/python/cpython/_apis/build/status/Azure%20Pipelines%20CI?branchName=master
  :alt: CPython build status on Azure DevOps
  :target: https://dev.azure.com/python/cpython/_build/latest?definitionId=4&branchName=master