Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate?

Set and export the IGNORE_TLS environment variable on the command line.

Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate?

Pass the ‘--insecure registry’ flag to the daemon at run time.

Is this an advantage of multi-stage builds?

better logical separation of Dockerfile instructions for increased readability

Is this an advantage of multi-stage builds?

better caching when building Docker images

You add a new user to the engineering organization in DTR.

Will this action grant them read/write access to the engineering/api repository?

Add the user directly to the list of users with read/write access under the repository’s Permissions tab.