Allow dot in IDs, but not at start or end.

eldering · eldering · commit 5ef368bbdb1a · 2021-11-09T20:56:17.000+01:00
diff --git a/contest-api/json-schema/common.json b/contest-api/json-schema/common.json
@@ -62,7 +62,7 @@
 
 	"identifier": {
 		"type": "string",
-		"pattern": "^[A-Za-z0-9_][A-Za-z0-9_-]{0,35}"
+		"pattern": "^[A-Za-z0-9_]([A-Za-z0-9_\\.-]{0,34}[A-Za-z0-9_-]|)"
 	},
 
 	"identifierornull": {
