Merge pull request #4417 from rclanan/fix/master/4294-docker-named-conflicts

providers/docker: Unset container name if docker_run is called. Fixes #4294

plugins/providers/docker/action/create.rb

@@ -32,12 +32,19 @@ module VagrantPlugins
             # Remove container after execution
             params[:rm] = true if env[:run_rm]
 
+            # Name should not be used with run_command
+            params[:name] = UNSET_VALUE
+
             # We link to our original container
             # TODO
           end
 
           env[:ui].output(I18n.t("docker_provider.creating"))
-          env[:ui].detail("  Name: #{params[:name]}")
+
+          if params[:name] != UNSET_VALUE
+            env[:ui].detail("  Name: #{params[:name]}")
+          end
+
           env[:ui].detail(" Image: #{params[:image]}")
           if params[:cmd] && !params[:cmd].empty?
             env[:ui].detail("   Cmd: #{params[:cmd].join(" ")}")