integrated creation into the standard session.add_node call, currently requires an extra check due to the need for being able to specify an image

daemon/examples/docker/docker2docker.py

@@ -1,7 +1,7 @@
 import logging
 
 from core.emulator.coreemu import CoreEmu
-from core.emulator.emudata import IpPrefixes
+from core.emulator.emudata import IpPrefixes, NodeOptions
 from core.emulator.enumerations import NodeTypes, EventTypes
 
 
@@ -15,17 +15,20 @@ if __name__ == "__main__":
     # create nodes and interfaces
     try:
         prefixes = IpPrefixes(ip4_prefix="10.83.0.0/16")
-        node_one = session.add_node(_type=NodeTypes.DOCKER)
-        node_two = session.add_node(_type=NodeTypes.DOCKER)
+        options = NodeOptions(image="ubuntu:ifconfig")
+
+        # create node one
+        node_one = session.add_node(_type=NodeTypes.DOCKER, node_options=options)
         interface_one = prefixes.create_interface(node_one)
+
+        # create node two
+        node_two = session.add_node(_type=NodeTypes.DOCKER, node_options=options)
         interface_two = prefixes.create_interface(node_two)
 
         # add link
-        input("press key to continue")
         session.add_link(node_one.id, node_two.id, interface_one, interface_two)
-        print(node_one.cmd_output("ifconfig"))
-        print(node_two.cmd_output("ifconfig"))
-        input("press key to continue")
+
+        # instantiate
         session.instantiate()
     finally:
         input("continue to shutdown")