Bug report info

When I first ran act, I selected the "Medium" image. That failed because it couldn't find a satisfactory Python. So I figured I'd try a "Large" image. But I can't figure out how to reset that preference.

Things I've tried:

invoking act with act -P image=catthehacker/ubuntu:full-22.04 seems to pull the medium images anyway.

[build docs/deploy] 🚀  Start image=catthehacker/ubuntu:act-latest
[minimal/run      ] 🚀  Start image=catthehacker/ubuntu:act-20.04
[ci/common/run] 🚀  Start image=catthehacker/ubuntu:act-20.04

I've tried deleting the medium images from docker, but it just re-pulls them without asking again.

I've tried deleting everything I could find associated with act on the hope that it would ask again when I reinstalled it, but that preference is still hiding somewhere...

### Command used with act

```sh
`act -P image=catthehacker/ubuntu:full-22.04`

Describe issue

I've spent 30 minutes reading documentation, forums, and reinstalling stuff trying to get back to the "What size image do you want to use?" prompt that it asked me when I first installed act.

Link to GitHub repository

No response

Workflow content

n/a

Relevant log output

[build docs/deploy] 🚀  Start image=catthehacker/ubuntu:act-latest
[minimal/run      ] 🚀  Start image=catthehacker/ubuntu:act-20.04
[ci/common/run] 🚀  Start image=catthehacker/ubuntu:act-20.04

Additional information

No response