Add nginx proxy_pass for /electrs -> localhost port 3000

nginx.conf

@@ -65,6 +65,10 @@ http {
 			proxy_pass http://127.0.0.1:8999/api;
 		}
 
+		location /electrs/ {
+			proxy_pass http://127.0.0.1:3000/;
+		}
+
 		location /ws {
 			proxy_pass http://127.0.0.1:8999/;
 			proxy_http_version 1.1;