Merge branch 'patch-8' into 'master'

Update using_docker_images.md

See merge request gitlab-org/gitlab-ce!14988

doc/ci/docker/using_docker_images.md

@@ -327,10 +327,6 @@ means, that when starting the container without additional options, it will run
 the database's process, while Runner expects that the image will have no
 entrypoint or at least will start with a shell as its entrypoint.
 
-Previously we would need to create our own image based on the
-`super/sql:experimental` image, set the entrypoint to a shell, and then use
-it in job's configuration, e.g.:
-
 Before the new extended Docker configuration options, you would need to create
 your own image based on the `super/sql:experimental` image, set the entrypoint
 to a shell and then use it in job's configuration, like: