Add the ability to run the luprex server from vscode

build.py

@@ -65,6 +65,13 @@ def expand_json(data, vars):
             body = data["body"]
             foreach = data["for-each"]
             return [ expand_json(body, vars | lvars) for lvars in foreach ]
+        if "append1" in data and "append2" in data:
+            result = []
+            for i in range(1, 1000):
+                key = f"append{i}"
+                if key not in data: break
+                result = result + expand_json(data[key], vars)
+            return result
         else:
             return { key: expand_json(value, vars) for key, value in data.items() }
     elif isinstance(data, list):