Setting proper permissions on copied lesson dir, using config'd location

[Mierdin]

For selfmedicate users, the mounted lesson directory was owned by root:root, which meant they couldn't make changes to lesson files, like they could in production, where Git is used to provide access to these resources.

This change recursively chowns the lesson directory to ensure they have this same ability when using the local copy option.

[codecov]

Codecov Report

Merging #92 into master will increase coverage by 0.13%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master      #92      +/-   ##
==========================================
+ Coverage   23.48%   23.61%   +0.13%     
==========================================
  Files          18       18              
  Lines        1916     1918       +2     
==========================================
+ Hits          450      453       +3     
  Misses       1412     1412              
+ Partials       54       53       -1

Impacted Files	Coverage Δ
scheduler/scheduler.go	30.63% <0%> (-0.28%)	⬇️
scheduler/namespaces.go	58.03% <0%> (+2.67%)	⬆️

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