Rename migrate_to_labels -> migrate-to-labels

Signed-off-by: Aanand Prasad <[email protected]>

compose/cli/docopt_command.py

@@ -33,6 +33,8 @@ class DocoptCommand(object):
         if command is None:
             raise SystemExit(getdoc(self))
 
+        command = command.replace('-', '_')
+
         if not hasattr(self, command):
             raise NoSuchCommand(command, self)
 

compose/cli/main.py

@@ -99,7 +99,7 @@ class TopLevelCommand(Command):
       start              Start services
       stop               Stop services
       up                 Create and start containers
-      migrate_to_labels  Recreate containers to add labels
+      migrate-to-labels  Recreate containers to add labels
 
     """
     def docopt_options(self):
@@ -493,7 +493,7 @@ class TopLevelCommand(Command):
         """
         Recreate containers to add labels
 
-        Usage: migrate_to_labels
+        Usage: migrate-to-labels
         """
         migration.migrate_project_to_labels(project)
 

compose/service.py

@@ -789,7 +789,7 @@ def check_for_legacy_containers(
                 "labels. As of compose 1.3.0 containers are identified with "
                 "labels instead of naming convention. If you'd like compose "
                 "to use this container, please run "
-                "`docker-compose migrate_to_labels`" % (name,))
+                "`docker-compose migrate-to-labels`" % (name,))
 
 
 def parse_restart_spec(restart_config):