Container Registry not accessible with 2FA

The 8.12 due to update CI permissions also tightened the security of Container Registry for regular users: require to use personal token for the user if 2FA is enabled.

This lead to the problem with releasing 8.12.

I fixed that by creating a Personal Access token for the user and doing docker login.

This is good change, because it actually tightness security, but we should ensure that user can see the reason of denial.