adding node exporter, loki, and promtail

loki/rootfs/etc/services.d/nginx/run

@@ -0,0 +1,10 @@
+#!/usr/bin/with-contenv bashio
+# shellcheck shell=bash
+# ==============================================================================
+# Home Assistant Add-on: Loki
+# Runs the Nginx daemon
+# ==============================================================================
+bashio::net.wait_for 8080
+bashio::log.info "Starting NGinx..."
+
+exec /usr/sbin/nginx