Merge branch 'docs/63418-docs-feedback-update-for-11-11-1-feature-flag' into 'master'

Add note about Docker socket mounting

See merge request gitlab-org/gitlab-ce!29924

doc/ci/docker/using_docker_build.md

@@ -205,7 +205,14 @@ An example project using this approach can be found here: <https://gitlab.com/gi
 
 ### Use Docker socket binding
 
-The third approach is to bind-mount `/var/run/docker.sock` into the container so that docker is available in the context of that image.
+The third approach is to bind-mount `/var/run/docker.sock` into the
+container so that Docker is available in the context of that image.
+
+NOTE: **Note:**
+If you bind the Docker socket [when using GitLab Runner 11.11 or
+newer](https://gitlab.com/gitlab-org/gitlab-runner/merge_requests/1261),
+you can no longer use `docker:dind` as a service because volume bindings
+are done to the services as well, making these incompatible.
 
 In order to do that, follow the steps: