Parameterize build script filename
diff --git a/onos-build-base.py b/onos-build-base.py
index fef1f27..4672fdf 100755
--- a/onos-build-base.py
+++ b/onos-build-base.py
@@ -20,13 +20,13 @@
 # Import required functions from the Mininet build script
 from build import bootAndRun, Prompt, OVFOSNameID, generateOVF, log, build, run
 
-def installONOS( vm, prompt=Prompt ):
+def install( vm, scriptFileName='install-base.sh', prompt=Prompt ):
     # start with sendline
     #TODO consider resizing the HDD
-    url = 'https://gerrit.onosproject.org/gitweb?p=onos-vm.git;a=blob_plain;hb=refs/heads/onos-tutorial-1.1;f=install-base.sh'
-    vm.sendline( ' wget -O install-base.sh "%s" | bash' % url ) # space prefix is used to avoid entry in history
+    url = 'https://gerrit.onosproject.org/gitweb?p=onos-vm.git;a=blob_plain;hb=refs/heads/onos-tutorial-1.1;f=%s' % scriptFileName
+    vm.sendline( ' wget -O %s "%s" | bash' % (scriptFileName, url) ) # space prefix is used to avoid entry in history
     vm.expect( prompt, timeout=20 )
-    vm.sendline( 'bash install-base.sh' )
+    vm.sendline( 'bash %s' % scriptFileName )
     vm.expect( prompt, timeout=3600 )
     
 
@@ -36,13 +36,12 @@
     assert 'disk image' in output
     return os.stat( vmdk )[ ST_SIZE ]
 
-def buildBaseVm( image, out, flavor='trusty64server', installMemory=4096, ovfMemory=4096  ):
+def buildBaseVm( image, out, scriptFileName, scflavor='trusty64server', installMemory=4096, ovfMemory=4096  ):
     if not image:
-        # build VM from flavor
-        #build( flavor )
-        pass
+        log( '* Error: no image specified' )
+        sys.exit( 1 )
 
-    bootAndRun( image, runFunction=installONOS, memory=installMemory, outputFile=out )
+    bootAndRun( image, runFunction=install, scriptFileName=scriptFileName, memory=installMemory, outputFile=out )
 
     size = vmdk2size( out + '.vmdk' ) # get vmdk size
     ovfname = out
@@ -66,11 +65,13 @@
                          help='archive .ovf and .vmdk into .zip file' )
     parser.add_argument( '-o', '--out', required=True,
                          help='output file for test image (vmdk)' )
+    parser.add_argument( '-s', '--script', required=True,
+                         help='Install script filename' )
     args = parser.parse_args()
 
     print args
 
-    buildBaseVm( args.image, args.out )
+    buildBaseVm( args.image, args.out, args.script )
 
     if args.zip:
         log( '* Generating .zip file' )