Update README

Author: peter-evans

README.md

@@ -23,6 +23,8 @@ jobs:
 
 You can browse a run for this example [here](https://github.com/peter-evans/docker-compose-actions-workflow/commit/8fb9500661c318028422f3859c2d6e75dee0b9d9/checks).
 
+For more about testing containers before release see [Smoke Testing](https://github.com/peter-evans/smoke-testing).
+
 ## License
 
 MIT License - see the [LICENSE](LICENSE) file for details