Sample app4-apache2-httpd-oidc not running

[nwintering]

Tested release https://github.com/thorsten-l/Keycloak-Sample-Environment/releases/tag/20240314

When trying to spin up app4, docker compose encounters an error because an image is not accessible:

~/Keycloak-Sample-Environment/samples/app4-apache2-httpd-oidc$ docker compose up
[+] Running 1/1
✘ httpd Error 0.5s
Error response from daemon: Head "https://ghcr.io/v2/thorsten-l/apache2-httpd-oidc/manifests/latest": unauthorized