Commands like `image pull` don't output any status if stdout (or stderr) is being piped to a file

[danegsta]

If you run container image pull with stdout (or stderr) piped to a file, there's no progress output from the command. Ideally commands could fall back to a simple stream of status output if running without a terminal. This would make it easier to use the new CLI from other applications.

[jglogan]

Progress output and error messages go to stderr, so this command displays progress, and pull.txt is empty as long as there are no pull errors:

container image pull busybox:latest > pull.txt

Redirecting stderr does suppress status output still. Agree that plain status output would be better. If one doesn't want any progress on stderr, there's --progress none for that.

[saehejkang]

@jglogan What made you come back to this issue 7 months later? I was just about to open up a PR to fix this, when I reloaded the page and saw you commented and added labels 😅 .

[saehejkang]

@PhantomInTheWire Since you have a PR open already adding the plain status mode for image pull, this will be a good addition you can make to #899.