[core] Adjust UV_THREADPOOL_SIZE logic

entrypoint.sh

@@ -4,9 +4,19 @@
 #
 # Calculate UV_THREADPOOL_SIZE based on number of CPUs
 #
-cpus=$(node -e "const os = require('os'); console.log(os.cpus().length);")
+# Try to get CPU count using Node.js, fallback to 1 if it fails
+cpus=$(node -e "const os = require('os'); console.log(os.cpus().length);" 2>/dev/null) || cpus=1
+# Make sure cpus is a number, default to 1 if not
+case $cpus in
+  ''|*[!0-9]*) cpus=1 ;;
+esac
 uv_threadpool_size=$(($cpus * 1))
 
+# Check if uv_threadpool_size is less than 4 (default), set it to 4 if it is
+if [ "$uv_threadpool_size" -lt 4 ]; then
+  uv_threadpool_size=4
+fi
+
 # Set UV_THREADPOOL_SIZE as an environment variable
 export UV_THREADPOOL_SIZE="${UV_THREADPOOL_SIZE:-$uv_threadpool_size}"