Static code analysis on xls branch

Validate:

• Pass all the tests
• Don't left dangling images
• Check containers with Tenable
• Validate Node.JS usage

Node.JS tested on https://git.unl.edu/unl-its/src/-/jobs/7672

Closes #1 (closed)

changed the description

changed target branch from develop to working-copy

mentioned in commit 48ffbfec

merged