From 2a2f8f24e218287f829a22faebc039b09b1ec33d Mon Sep 17 00:00:00 2001
From: Eugene Rakhmatulin <eugr@eugr.com>
Date: Thu, 18 Dec 2025 23:02:58 -0800
Subject: [PATCH] Allow launch-cluster.sh to be executed in non-TTY environment

---
 launch-cluster.sh | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/launch-cluster.sh b/launch-cluster.sh
index ae1e857..09e8b85 100755
--- a/launch-cluster.sh
+++ b/launch-cluster.sh
@@ -415,7 +415,15 @@ wait_for_cluster() {
 if [[ "$ACTION" == "exec" ]]; then
     start_cluster
     echo "Executing command on head node: $COMMAND_TO_RUN"
-    docker exec -it "$CONTAINER_NAME" bash -i -c "$COMMAND_TO_RUN"
+    
+    # Check if running in a TTY to avoid "input device is not a TTY" error
+    if [ -t 0 ]; then
+        DOCKER_EXEC_FLAGS="-it"
+    else
+        DOCKER_EXEC_FLAGS="-i"
+    fi
+    
+    docker exec $DOCKER_EXEC_FLAGS "$CONTAINER_NAME" bash -i -c "$COMMAND_TO_RUN"
 elif [[ "$ACTION" == "start" ]]; then
     start_cluster
     if [[ "$DAEMON_MODE" == "true" ]]; then