Adding init_plugins (example plugin soon)

Also fixing an issue in the docker functions

CTFd/__init__.py

@@ -68,4 +68,8 @@ def create_app(config='CTFd.config'):
         app.register_blueprint(auth)
         app.register_blueprint(admin)
 
+        from CTFd.plugins import init_plugins
+
+        init_plugins(app)
+
         return app

CTFd/plugins/__init__.py

@@ -0,0 +1,15 @@
+from CTFd.models import db, WrongKeys, Pages, Config, Tracking, Teams, Containers, ip2long, long2ip
+from flask import current_app as app, g, request, redirect, url_for, session, render_template, abort
+import os
+import importlib
+import glob
+
+
+def init_plugins(app):
+    modules = glob.glob(os.path.dirname(__file__) + "/*")
+    for module in modules:
+        if os.path.isdir(module):
+            module = '.' + os.path.basename(module)
+            module = importlib.import_module(module, package='CTFd.plugins')
+            module.load(app)
+            print " * Loaded module,", module

CTFd/utils.py

@@ -500,6 +500,7 @@ def run_image(name):
             ports_asked = []
 
         cmd = ['docker', 'run', '-d']
+        ports_used = []
         for port in ports_asked:
             if is_port_free(port):
                 cmd.append('-p')