replace ADD with COPY in all Dockerfiles

[maxpschonder]

Checklist:

• [X] Have you added an explanation of what your changes do and why you'd like them to be included?
• [ ] Have you updated or added documentation for the change, as applicable?
• [ ] Have you tested your changes on all related environments with successful results, as applicable?

Type of Changes:

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

What is the current behavior? (link to any open issues here) Currently, in many crunchy container images, ADD is used instead of COPY. The functionality of both commands is identical when copying files. ADD is now considered a vulnerability by various container scanners. Docker itself recommends the use of COPY if ADD is not necessary.

• https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#add-or-copy
• https://www.aquasec.com/cloud-native-academy/docker-container/docker-cis-benchmark/#Container-Images-and-Build-File-Configuration

What is the new behavior (if this is a feature change)?

Other information: