add docker start command as argument
diff --git a/emuvim/api/zerorpcapi.py b/emuvim/api/zerorpcapi.py
index de43423..fd814b3 100755
--- a/emuvim/api/zerorpcapi.py
+++ b/emuvim/api/zerorpcapi.py
@@ -56,13 +56,13 @@
     def __init__(self, dcs):
         self.dcs = dcs
 
-    def compute_action_start(self, dc_label, compute_name, image, network):
+    def compute_action_start(self, dc_label, compute_name, image, command, network):
         # network e.g. {"ip": "10.0.0.254/8"}
         # TODO what to return UUID / given name / internal name ?
         logging.debug("RPC CALL: compute start")
         try:
             c = self.dcs.get(dc_label).startCompute(
-                compute_name, image=image, network=network)
+                compute_name, image=image, command=command, network=network)
             return str(c.name)
         except Exception as ex:
             logging.exception("RPC error.")