diff --git a/cluster_tools.cr b/cluster_tools.cr
index 356ea38b..c6b26f42 100644
--- a/cluster_tools.cr
+++ b/cluster_tools.cr
@@ -249,7 +249,14 @@ module ClusterTools
   def self.official_content_digest_by_image_name(image_name)
     Log.info { "official_content_digest_by_image_name: #{image_name}"}
 
-    result = exec("skopeo inspect docker://#{image_name}")
+    if ENV["DOCKERHUB_USERNAME"]? && ENV["DOCKERHUB_PASSWORD"]?
+      Log.info { "Using USERNAME and PASSWORD for accessing the registry via skopeo" }
+      registry_creds = "--creds #{ENV["DOCKERHUB_USERNAME"]}:#{ENV["DOCKERHUB_PASSWORD"]}"
+    else
+      Log.info { "Access the registry anonymously via skopeo" }
+      registry_creds = ""
+    end
+    result = exec("skopeo inspect #{registry_creds} docker://#{image_name}")
     response = result[:output]
     if result[:status].success? && !response.empty?
       return JSON.parse(response)