UBI image issues with nginx permissions

[jasonmadigan]

We've aligned our images recently to use UBI9 as a base, rather than using multiple images for builds (e.g. using both registry.access.redhat.com/ubi9/nodejs-20 and registry.access.redhat.com/ubi9/nginx-124:latest.

By not using the nginx image, the permissions for logs, cache and pids are restrictive OOTB after a dnf install of the nginx 1.24 package. This results in an error like this when starting with entrypoint.sh:

/usr/share/nginx/html/entrypoint.sh
nginx: [alert] could not open error log file: open() "/var/log/nginx/error.log" failed (13: Permission denied)
2024/11/29 15:22:39 [warn] 12#12: the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /etc/nginx/nginx.conf:5
2024/11/29 15:22:39 [emerg] 12#12: open() "/var/log/nginx/error.log" failed (13: Permission denied)