Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate? Solution: Pass the '--insecure-registry' flag to the daemon at run time.

The `--insecure-registry` daemon flag explicitly configures the Docker engine to bypass TLS certificate validation for the specified registry. This allows Docker to communicate with registries that use self-signed certificates or no encryption, which is often necessary for private development registries or testing environments.

Docker provides mechanisms to interact with registries that do not present trusted TLS certificates, and the `--insecure-registry` flag is the specific daemon configuration option for this purpose.