Move all samples to the root dir

Signed-off-by: Anca Iordache <anca.iordache@docker.com>

nginx-flask-mongo/flask/server.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+import os
+
+from flask import Flask
+from pymongo import MongoClient
+
+app = Flask(__name__)
+
+client = MongoClient("mongo:27017")
+
+@app.route('/')
+def todo():
+    try:
+        client.admin.command('ismaster')
+    except:
+        return "Server not available"
+    return "Hello fom the MongoDB client!\n"
+
+
+if __name__ == "__main__":
+    app.run(host='0.0.0.0', port=os.environ.get("FLASK_SERVER_PORT", 9090), debug=True)
+