Fix: Backquote in shell script executed command

[hoh]

When executed using bash, the create_disk_image was interrupted by a Python REPL due to the python -OO command being surrounded by backquotes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.87%. Comparing base (c7db4ef) to head (d0920a6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #611   +/-   ##
=======================================
  Coverage   43.87%   43.87%           
=======================================
  Files          55       55           
  Lines        4978     4978           
  Branches      587      587           
=======================================
  Hits         2184     2184           
  Misses       2677     2677           
  Partials      117      117           

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[github-actions]

Failed to retrieve llama text: POST 504:

504 Gateway Time-out

The server didn't respond in time.

[olethanh]

@hoh is it like a fish or dash only error? Because I don't have the issue with Debian's bash