Merge pull request #26557 from github/repo-sync

repo sync

Author: Octomerger

content/actions/using-containerized-services/about-service-containers.md

@@ -23,7 +23,7 @@ topics:
 
 Service containers are Docker containers that provide a simple and portable way for you to host services that you might need to test or operate your application in a workflow. For example, your workflow might need to run integration tests that require access to a database and memory cache.
 
-You can configure service containers for each job in a workflow. {% data variables.product.prodname_dotcom %} creates a fresh Docker container for each service configured in the workflow, and destroys the service container when the job completes. Steps in a job can communicate with all service containers that are part of the same job.
+You can configure service containers for each job in a workflow. {% data variables.product.prodname_dotcom %} creates a fresh Docker container for each service configured in the workflow, and destroys the service container when the job completes. Steps in a job can communicate with all service containers that are part of the same job. However, you cannot create and use service containers inside a composite action. 
 
 {% data reusables.actions.docker-container-os-support %}