compose: expose host network to access for external DB

compose: updated metrics images

compose: freeze to 4.28.0 default version if not given. - also remove .env file as we really only with generated one from now one - small update to provide env_file to be replaced by --env option

scripts: bring back dev.sh

rccontrol small fixes / help spelling

multiple changes - nginx less rhodecode - traefik changes - new custom override templates - service updates - new docker volumes naming

release of new installer/docker stack updates Tons of changes to move towards new rccontrol docker stack based installer

.gitignore update with new rules

nginx: expose real-ip proxy address

compose: updates to source installation, and new build tag image support