Add option to expose ports

README.md

 
  * `--image <image>` - changes the image that will be used. You can specify
    tags (`name:tag`) or digests (`name@digest`) as with `docker run`.
+ * `-p <port>` or `--port <port>` - expose additional ports. Same format
+   as `docker run`'s `-p` option.
 
 ## What's not done yet
 

docker-rerun

         container.image = args.image
 
 
+def modify_port_add(parser=None, args=None, container=None):
+   """Allows a additional ports to be exposed."""
+   if parser:
+       parser.add_argument('--port', '-p', action='append',
+                           help='Additional port to expose')
+   elif args.port:
+       container.args.extend(['-p=%s' % port for port in args.port])
+
+
 def functions():
     """Lists all functions defined in this module.
 

test.py

            ['docker', 'run', '--name=test123', '-d', 'hello-world'],
            ['--image', 'hello-world:latest'],
            ['docker', 'run', '--name=test123', '-d', 'hello-world:latest'])
+    yield (check,
+           ['docker', 'run', '--name=test123', '-d', 'hello-world'],
+           ['--port', '123:456'],
+           ['docker', 'run', '--name=test123', '-d', '-p=123:456', 'hello-world'])
+    yield (check,
+           ['docker', 'run', '--name=test123', '-d', 'hello-world'],
+           ['--port', '123:456', '-p', '80'],
+           ['docker', 'run', '--name=test123', '-d', '-p=123:456', '-p=80', 'hello-world'])
 
 
 @with_setup(setup_each, teardown_each)