Merge pull request #341 from linuxserver/localhost

Use localhost instead of 127.0.0.1 for readiness check

root/etc/s6-overlay/s6-rc.d/svc-plex/run

@@ -4,5 +4,5 @@ echo "Starting Plex Media Server. . . (you can ignore the libusb_init error)"
 export PLEX_MEDIA_SERVER_INFO_MODEL=$(uname -m)
 export PLEX_MEDIA_SERVER_INFO_PLATFORM_VERSION=$(uname -r)
 exec \
-    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z 127.0.0.1 32400" \
+    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z localhost 32400" \
         s6-setuidgid abc "/usr/lib/plexmediaserver/Plex Media Server"