fix image exists

Author: bertiethorpe

.github/bin/get-s3-image.sh

@@ -12,7 +12,7 @@ bucket_name=$2
 echo "Checking if image $image_name exists in OpenStack"
 image_exists=$(openstack image list --name "$image_name" -f value -c Name)
 
-if [ -n $image_exists ]; then
+if [ ! -n $image_exists ]; then
     echo "Image $image_name already exists in OpenStack."
 else
     echo "Image $image_name not found in OpenStack. Getting it from S3."

.github/workflows/upload-release-image.yml.sample

@@ -57,7 +57,7 @@ jobs:
         run: |
           . venv/bin/activate
           image_hanging=$(openstack image list --name ${{ inputs.image_name }} -f value -c ID -c Status | grep -v ' active$' | awk '{print $1}'
-          if [ -n $image_hanging ]; then
+          if [ ! -n $image_hanging ]; then
             echo "Cleaning up OpenStack image with ID: $image_hanging"
             openstack image delete $image_hanging
           else