cli: add -e/--enable for enabling service at boot

dspawn/cli.py

@@ -41,6 +41,9 @@ def main():
     parser.add_argument('-p', '--privateoff',
                         action='store_true',
                         help='turn off PrivateUsers mapping'),
+    parser.add_argument('-e', '--enable',
+                        action='store_true',
+                        help='enable service (append it to machines.target.wants)'),
     parser.add_argument('--version', action='version',
                        version='%(prog)s ' + str(dspawn.__version__))
     parser.add_argument('-v', '--verbose',

dspawn/container.py

@@ -41,7 +41,7 @@ def use_aptcacherng():
 class Machine(object):
     def __init__(self, name, release='stable', mode='private', address=None,
                  proxy=False, macaddress=None, privateoff=False, bind=None,
-                 **kwargs):
+                 enable=False, **kwargs):
 
         if isinstance(name, list):
             self.name = name[0]
@@ -58,6 +58,7 @@ class Machine(object):
         self.macaddress = macaddress
         self.proxy = proxy
         self.mode = mode
+        self.enable = enable
         self.privateoff = privateoff
         self.modelpath = ".%s-%s" % (release, defaults['arch'])
         self.config_file = '/etc/systemd/nspawn/%s.nspawn' % self.name
@@ -81,6 +82,8 @@ class Machine(object):
 
     def config(self):
         self.configuration.realize()
+        if self.enable:
+            os.system('systemctl enable systemd-nspawn@$%s.service' % self.name)
 
     def start(self):
         os.system('machinectl start %s' % self.name)