[d] Adding a target to doit to restart containers

dodo.py

@@ -104,6 +104,30 @@ def task_up():
     }
 
 
+def restart(*containers):
+    '''This actually restart the container(s).'''
+    srv = subprocess.check_output((COMPOSE + ' config --services').split())
+    services = srv.decode('utf-8').strip().split()
+    for container in containers:
+        if container not in services:
+            raise ValueError("%s is not among the services %r" % (container, services))
+        subprocess.check_call((COMPOSE + 'restart %s' % container).split())
+    return True
+
+
+def task_restart(*containers):
+    '''Restarts a container specified via commandline.'''
+    return {
+        'params': [{'name': 'services',
+                    'short': 's',
+                    'long': 'service',
+                    'type': list,
+                    'default': [],
+                    'help': "the list of services to be restarted"}],
+        'actions': [(restart, containers)],
+    }
+
+
 def task__cleanall():
     '''clean everything there is to clean'''
     return {