Merge pull request #10 from TG-WinG/feature/build

fix: backup.sh 수정

JWT/deploy/backup.sh

@@ -1,3 +1,10 @@
 #!/bin/bash
 
-sudo mv server.jar server.bak.jar
+if [ -f server.jar ]; then
+  sudo mv server.jar server.bak.jar
+  echo "server.bak.jar create."
+  exit 0
+fi
+
+echo "no server.jar file found."
+exit 0