- Apache's readiness to start is now indicated by presence of ".ready" file in the sites.d directory, as well as checking for existence of at least one file with "*.conf" suffix
- Do not start Apache2.4 automatically, only start it when sites are defined
- Introduce `probe.sh` script to be used as K8s probes (the probe script is failing even when Apache is gracefully stopped due to no sites being defined)