Restart script clarity (#4837)

* Add error clarity to restart containers script

* erroneous cleanup on exit

* space

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

---------

Co-authored-by: Wenxi Onyx <wenxi-onyx@Wenxis-MacBook-Pro.local>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

Author: 3 people

backend/scripts/restart_containers.sh

@@ -1,4 +1,14 @@
 #!/bin/bash
+set -e
+
+cleanup() {
+  echo "Error occurred. Cleaning up..."
+  docker stop onyx_postgres onyx_vespa onyx_redis 2>/dev/null || true
+  docker rm onyx_postgres onyx_vespa onyx_redis 2>/dev/null || true
+}
+
+# Trap errors and output a message, then cleanup
+trap 'echo "Error occurred on line $LINENO. Exiting script." >&2; cleanup' ERR
 
 # Usage of the script with optional volume arguments
 # ./restart_containers.sh [vespa_volume] [postgres_volume] [redis_volume]