diff --git a/.gitea/workflows/generate-iso.yaml b/.gitea/workflows/generate-iso.yaml
index 55d55cd..28f17c6 100644
--- a/.gitea/workflows/generate-iso.yaml
+++ b/.gitea/workflows/generate-iso.yaml
@@ -30,7 +30,7 @@ jobs:
 
     ### Run all steps inside Debian Bookworm
     container:
-      image: debian:trixie
+      image: debian:bookworm
 
     steps:
       - name: Basic Image Setup and enable Bookworm Backports.
@@ -212,8 +212,9 @@ jobs:
             echo "✅ ISO file found: ${VAR_ISO_FILE_NAME}"
           fi
 
+          AUTH="${SHARE_TOKEN}:${SHARE_PASS}"
           if curl --retry 2 "${NC_BASE}"/public.php/webdav/"${VAR_ISO_FILE_NAME}" \
-          --upload-file "${VAR_ISO_FILE_PATH}" -u '${SHARE_TOKEN}:${SHARE_PASS}'; then
+          --upload-file "${VAR_ISO_FILE_PATH}" --user "${AUTH}"; then
             echo "✅ New ISO successfully uploaded."
           else
             echo "❌ Uploading the new ISO failed."