Add nextcheck.sh

nextcheck.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+# Loop through all running containers
+for container in $(docker ps --format '{{.Names}}'); do
+    echo "------------------------------------------------"
+    echo "Checking container: $container"
+    
+    # Try to list the installed next version inside the container
+    # Most Coolify/Nixpacks containers place source in /app
+    version=$(docker exec "$container" npm list next --depth=0 2>/dev/null | grep 'next@')
+    
+    if [ ! -z "$version" ]; then
+        echo -e "\033[31mFOUND NEXT.JS:\033[0m $version"
+    else
+        echo "Next.js not detected (or not a Node container)"
+    fi
+done