Merge pull request #7820 from SvenDowideit/eik3-exit-doc-patch

alternative to `exit` command: `CTRL-D`
Upstream-commit: 2aaa8892e3d126e20f2659e9b71a9ce9973cf60f
Component: engine

components/engine/docs/sources/userguide/dockerizing.md

@@ -81,7 +81,7 @@ of the root directory which shows us what looks like a typical Linux
 file system.
 
 You can play around inside this container and when you're done you can
-use the `exit` command to finish.
+use the `exit` command or enter Ctrl-D to finish.
 
     root@af8bae53bdd3:/# exit