bareos-webui-nginx puts configuration file in the wrong configuration directory
bareos-webui-nginx on Alpine Edge drops the bareos-webui.conf file in the /etc/nginx/conf.d directory. It should be in the /etc/nginx/http.d directory in order to properly be loaded when nginx is started without taking a manual action to move the file.
/etc/nginx/conf.d isn't enabled by default in nginx.conf, but even if it was, it'll fail to load because bareos-webui.conf starts with the server directive which isn't permitted in files in /etc/nginx/conf.d since those files are loaded into the root context of nginx.