disable cache for hypervisor by default

BUILD.sh

@@ -24,6 +24,8 @@ fi
 IMAGE_TAG=$(git rev-parse --short HEAD)
 IMAGE_NAME=${IMAGE_NAME:-bearcloud}
 
+HY_OPTS=${HY_OPTS:-"--no-cache"}
+
 echo "Image tag: $IMAGE_NAME:$IMAGE_TAG and $IMAGE_NAME:latest"
 echo "Additional arguments for VM image: $VM_OPTS"
 echo "Additional arguments for Hypervisor Image: $HY_OPTS"