From 39a822f8bfb40f19629e35b84f792111242c1d4c Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@student.hpi.de>
Date: Thu, 22 Nov 2018 19:03:35 +0100
Subject: [PATCH] Skip all docker images not tagged (otherwise, the method
 crashes)

---
 lib/docker_client.rb | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/docker_client.rb b/lib/docker_client.rb
index 5ae35e47..5677c047 100644
--- a/lib/docker_client.rb
+++ b/lib/docker_client.rb
@@ -333,7 +333,14 @@ class DockerClient
 
   def self.find_image_by_tag(tag)
     # todo: cache this.
-    Docker::Image.all.detect { |image| image.info['RepoTags'].flatten.include?(tag) }
+    Docker::Image.all.detect do |image|
+      begin
+        image.info['RepoTags'].flatten.include?(tag)
+      rescue
+        # Skip image if it is not tagged
+        next
+      end
+    end
   end
 
   def self.generate_local_workspace_path