bin/doc in docktor-0.1.0 vs bin/doc in docktor-0.2.0

@@ -4,6 +4,10 @@
 Bundler.setup
 require "docktor"
 
 include Docktor
 
-Docktor::Runner.new.invoke
+begin
+  Docktor::Runner.new.invoke container_name: ARGV[0]
+rescue Docktor::Runner::ContainerNotFound => e
+  puts e.message
+end