Improve message if uffizzi unable to log in to docker registry.

[NealArw]

1. Go into CLI
2. Sign in
3. Try to connect any docker-registry (ecr, acr, etc..) using invalid credentials (run: bundle exec uffizzi connect docker-hub)

Result: Message: We were unable to log you in to docker registry. Please verify that your username and password are correct.

Suggestion: Specify which docker registry we can't log in to. In GHA it is hard to understand, which connection was failed:

[JessikaCastellano]

Test result:

[moklidia]

@JessikaCastellano Please test and attach screenshots of cases when a custom docker registry and other registries are used (Amazon, Azure, Google).

[JessikaCastellano]

Tests

DockerHub:

Azure:

Amazon:

Google:

GitHub Container Registry

[JessikaCastellano]

Docker Registry:

[JessikaCastellano]

New PR #283 open

Tests:

DockerHub

Azure

Amazon

Google

GitHub Container Registry

Docker Registry

[NealArw]

TESTED on prod - OK

# uffizzi connect gcr google.json
We were unable to log you in to Google. Please verify that your username and password are correct.

# uffizzi connect docker-hub
Username: 12351
Password:
We were unable to log you in to DockerHub. Please verify that your username and password are correct.

# uffizzi connect ecr
Registry Domain: ***
Access key ID: c1234c
Secret access key:
We were unable to log you in to Amazon. Please verify that your username and password are correct.

# uffizzi connect ghcr
Github Username: NealArw
Access Token:
We were unable to log you in to Github Container Registry. Please verify that your username and password are correct.

For docker-registry issue created https://github.com/UffizziCloud/uffizzi/issues/295