Validate numeric input for number of threads and Updated the docker script for ubuntu 22

[jatinwadhwa921]

1. Add check to ensure input for 'num_of_threads' is a valid numeric string
2. Prevent conversion of non-numeric strings (e.g., '1b', '1#c') to integers
3. Throw exception for invalid inputs to improve error handling
4. Updated the docker script for ubuntu 22

[preetha-intel]

LGTM