Update src/dockerutils.sh

src/dockerutils.sh

@@ -11,6 +11,7 @@ check_swarm_status() {
         echo "Node is in an active swarm."
     else
         echo "Node swarm status is unknown: $SWARM_STATUS"
+        echo "Usage: Ensure Docker is running and the node is part of a swarm."
         return 1
     fi
 }
@@ -23,6 +24,10 @@ check_node_role() {
     else
         echo "Node is a worker."
     fi
+    if [ -z "$NODE_ROLE" ]; then
+        echo "Usage: Ensure Docker is running and the node is part of a swarm."
+        return 1
+    fi
 }
 
 # Function to list Docker volumes
@@ -34,6 +39,10 @@ list_docker_volumes() {
         echo "Available Docker volumes:"
         echo "$volumes"
     fi
+    if [ $? -ne 0 ]; then
+        echo "Usage: Ensure Docker is running and you have the correct permissions."
+        return 1
+    fi
 }
 
 # Function to list Docker overlay networks
@@ -45,6 +54,10 @@ list_docker_overlay_networks() {
         echo "Docker overlay networks:"
         echo "$networks"
     fi
+    if [ $? -ne 0 ]; then
+        echo "Usage: Ensure Docker is running and you have the correct permissions."
+        return 1
+    fi
 }
 
 # Function to deploy a Docker stack with registry auth
@@ -54,6 +67,10 @@ dup() {
         return 1
     fi
     docker stack deploy --with-registry-auth -c ~/"$1"/"$1".yml "$1"
+    if [ $? -ne 0 ]; then
+        echo "Usage: Ensure the stack name is correct and the Docker Compose file exists in the specified location."
+        return 1
+    fi
 }
 
 # Function to remove a Docker stack
@@ -63,6 +80,10 @@ ddn() {
         return 1
     fi
     docker stack rm "$1"
+    if [ $? -ne 0 ]; then
+        echo "Usage: Ensure the stack name is correct and the Docker stack is currently deployed."
+        return 1
+    fi
 }
 
 # Function to get container ID by name
@@ -71,7 +92,13 @@ cid() {
         echo "Usage: cid <container-name>"
         return 1
     fi
-    docker ps -qf "name=^$1" 2>/dev/null
+    container_id=$(docker ps -qf "name=^$1" 2>/dev/null)
+    if [ -z "$container_id" ]; then
+        echo "No container found with the name: $1"
+        echo "Usage: Ensure the container name is correct and the container is running."
+        return 1
+    fi
+    echo "$container_id"
 }
 
 # Export functions as commands