Checkpoint peering identity and opt-in discovery

.dockerignore

@@ -11,12 +11,16 @@
 !public/**
 !greatest/
 !greatest/**
+!discovery/
+!discovery/**
 !runtime/
 !runtime/**
 !sentinel/
 !sentinel/**
 !scraper/
 !scraper/**
+!peering/
+!peering/**
 !tools/
 !tools/**
 scraper/.cache/**