Use relative module path for both UBI and Alpine builds

[shaun-nx]

Proposed changes

This change updates references to /usr/lib/nginx/modues to use the relative path modules/<module_to_load>
By default NGINX creates a symlink from /etc/nginx/modules/ to the appropriate module dir based on the base image used

Closes #4002

Checklist

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• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

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please add a brief note that summarizes the change.

NONE

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.80%. Comparing base (28d8e3f) to head (a65cba6).
⚠️ Report is 1 commits behind head on feat/openshift-support.

Additional details and impacted files

@@                    Coverage Diff                     @@
##           feat/openshift-support    #4004      +/-   ##
==========================================================
+ Coverage                   86.77%   86.80%   +0.03%     
==========================================================
  Files                         128      128              
  Lines                       16607    16607              
  Branches                       62       62              
==========================================================
+ Hits                        14410    14416       +6     
+ Misses                       2012     2008       -4     
+ Partials                      185      183       -2     

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[tataruty]

why not to make /usr/lib64/nginx/modules env variable?

[shaun-nx]

I don't quite understand.
If we set /usr/lib64/nginx/modules as an env variable (e.g. export LIB_DIR=/usr/lib64/nginx/modules ) does that mean we can avoid making the directory?

[tataruty]

no, just having it to edit in one place

[ciarams87]

I don't think it should be an ENV var because then it's technically over writable at build time which is not what we want here. It's correct to be explicit here - and anyway it's only specified in the file twice.

[ciarams87]

I'll rebase the base branch to main again so that we don't need these changes here