Docker Examples Missing STDIN Argument

[silktrader]

Firstly, I'd like to report success and thank you for the script. I was able to rewrite the paths of some 2K torrents, with five successive passes, from the container.

I spotted two minor issues that could be easily fixed:

1. the docker examples in the Readme are missing the "-i" option. Without it, the script will throw an exception:
   

   qbt_migrate/qbt_migrate/cli.py

   Line 89 in 597ef9a

   answer := input("Existing and New paths are regex patterns (capture groups recommended)? [y/N]: ")

2. running without "-s" will actually trigger exceptions when files can't be parsed; an error message and the invitation to "-s" would be welcome

Thanks, again.