followup change: fix dummy webserver

the dummy server was no longer working after server rework

dummy-webserver

@@ -1,9 +1,32 @@
 #!/usr/bin/env python3
 
 import sys
+import argparse
 import pathlib
 sys.path.insert(0, str((pathlib.Path(__file__) / '..').resolve()))
-import webserver
-from dummy import SecopDummyInstrument
+from webserver import server
+from base import Client
+from dummy import DummyGraph, DummyHistory
+from secop import SecopInteractor
 
-webserver.instrument = webserver.main(SecopDummyInstrument)
+
+def parseArgv(argv):
+    parser = argparse.ArgumentParser(
+        description="start webserver with dummy history and SECoP interaction",
+    )
+    parser.add_argument("port",
+                        type=str,
+                        default='8888',
+                        nargs='?',
+                        help="port number to serve")
+    parser.add_argument('-u',
+                        '--uri',
+                        action='store',
+                        help='SECoP uri',
+                        default='localhost:5000')
+    return parser.parse_args(argv)
+
+
+args = parseArgv(sys.argv[1:])
+
+server.run(int(args.port), DummyHistory(args.uri), DummyGraph, Client, single_instrument='dummy', secop=SecopInteractor)