Please describe the scenario where the new feature would be useful
pro attach $token isn't ideal because the token ends up in cmdline.
Describe the solution you'd like
Perhaps pro attach with no flags (or maybe a flag name to be bikeshedded) would use a token in a UBUNTU_PRO_TOKEN environment variable, if present, for attaching.
Current behavior
There are several alternatives for attaching, but this may be an simpler method of attachment for some users.
Please describe the scenario where the new feature would be useful
pro attach $tokenisn't ideal because the token ends up in cmdline.Describe the solution you'd like
Perhaps
pro attachwith no flags (or maybe a flag name to be bikeshedded) would use a token in aUBUNTU_PRO_TOKENenvironment variable, if present, for attaching.Current behavior
There are several alternatives for attaching, but this may be an simpler method of attachment for some users.