Fix frozen string error (puppetlabs#434)

esalberg · Feb 18, 2019 · de3f000 · de3f000
1 parent 8f333f6
commit de3f000
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/tasks/swarm_token.rb b/tasks/swarm_token.rb
@@ -7,7 +7,7 @@
 
 def swarm_token(node_role)
   cmd_string = 'docker swarm join-token -q'
-  cmd_string << " #{node_role}" unless node_role.nil?
+  cmd_string += " #{node_role}" unless node_role.nil?
 
   stdout, stderr, status = Open3.capture3(cmd_string)
   raise Puppet::Error, "stderr: '#{stderr}'" if status != 0