[BUG] copa overwrites /usr/sbin symlink for mariner distroless/debug

[sozercan]

Version of copa

v0.9.0

Expected Behavior

copa should not change the existing directory structure and symlinks

Actual Behavior

copa overwrites the existing symlink

Steps To Reproduce

1. Check config for original image https://oci.dag.dev/layers/mcr.microsoft.com/cbl-mariner/distroless/debug@sha256:960d95cc274484fc72b33d4b5720857fbb1c9a5f35b93a39f8e161557236fd4d/
   70a0cf87 lrwxrwxrwx 0/0 0 2024-01-23 18:52 sbin -> usr/sbin

2. copa patch -i mcr.microsoft.com/cbl-mariner/distroless/debug:2.0.20241029

3. Check config for patched image: https://oci.dag.dev/layers/sertacacr.azurecr.io/debug:2.0-patched@sha256:ffb2188eb72313a86dc3b0a00e903c2cbd0eda565a50bbc47038ec04b8b0b174/
   d0a2b129 drwxr-xr-x 0/0 0 2024-11-26 19:04 sbin

Mariner 2 spec provides /sbin as the path and copa is extracting to that path since that's the path in the rpm. Copa should check if existing path is a symlink and follow the path instead of dropping the files
https://github.com/microsoft/azurelinux/blob/2.0/SPECS/busybox/busybox.spec#L94

Are you willing to submit PRs to contribute to this bug fix?

• Yes, I am willing to implement it.

[pradhans0906]

related #809

https://github.com/project-copacetic/copacetic/blob/ddd8edd1d0d0b9f001bf6c20a4427c6d0af3724b/pkg/pkgmgr/rpm.go#L634C2-L638C1