docker: Replace php daemon script with bash script

[VerifiedJoseph]

Replaces the long running php daemon script in the docker image with a bash script that only runs cron.php when needed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (301e742) to head (694a25c).

❗ Current head 694a25c differs from pull request most recent head 620131a. Consider uploading reports for the commit 620131a to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##                main      #185   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       229       229           
===========================================
  Files             25        25           
  Lines            564       564           
===========================================
  Hits             564       564           

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