Add suggested changes to docker build doc
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				|  | @ -580,9 +580,10 @@ For private and internal projects: | |||
| If you want to use your own Docker images for docker-in-docker there are a few things you need to do in addition to the steps in the [docker-in-docker](#use-docker-in-docker-workflow-with-docker-executor) section: | ||||
| 
 | ||||
| 1. Update the `image` and `service` to point to your registry. | ||||
| 1. Add a service [alias](https://docs.gitlab.com/ee/ci/yaml/#servicesalias) | ||||
| 1. Add a service [alias](https://docs.gitlab.com/ee/ci/yaml/#servicesalias). | ||||
| 
 | ||||
| Below is an example of how your `.gitlab-ci.yml` should look like, assuming you have it configured with [TLS enabled](#tls-enabled): | ||||
| Below is an example of what your `.gitlab-ci.yml` should look like, | ||||
| assuming you have it configured with [TLS enabled](#tls-enabled): | ||||
| 
 | ||||
| ```yaml | ||||
|  build: | ||||
|  | @ -603,7 +604,7 @@ Below is an example of how your `.gitlab-ci.yml` should look like, assuming you | |||
|      - docker run my-docker-image /script/to/run/tests | ||||
| ``` | ||||
| 
 | ||||
| If you forget to set the service alias the `docker:19.03.1` image won't find the | ||||
| If you forget to set the service alias, the `docker:19.03.1` image won't find the | ||||
| `dind` service, and an error like the following is thrown: | ||||
| 
 | ||||
| ```sh | ||||
|  |  | |||
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