observation: kamal registry login fails if docker desktop defunc

[wdiechmann]

disclaimer: a one-incidence sample does not qualify for nothing at all - but could this perhaps be a 'feature' to report early to the user that their docker desktop is not working?

if kamal deploy hangs on the initial docker login... then debug with kamal registry login - and should that command exhibit similar outcome there is a good chance your Docker Desktop somehow is not working!

BTW: tried logging out of Docker Desktop - that's not an issue. Tried logging out of Docker Desktop and quitting Docker Desktop - neither an issue.