Unable to update Docker login details for instance

[georgitsenov]

Greetings!

I noticed that using "vastai update instance" can change the template for instance, but cannot add/change private Docker registry details.

Here is an example from my case from today:

• I had a container, using public VastAI template
• I updated the instance to use new private Docker registry image, new private template and recycled the instance
• since no login details for the private Docker registry were added to the instance (when it was created, year ago) - as expected image pull failed.

Can you please update the "vastai update instance" command so we can pass --login as well to add/update private Docker registry details.

Perhaps the best course of action is to add "--login" option to "vastai update instance" command, the same option that exists within "vastai create instance" command.

Thanks!