fixed the flask service binding to localhost instead of 0.0.0.0, preventing it from being connected to outside of a docker container

src/main.py

@@ -49,4 +49,4 @@ def hello():
     return render_template('hello.html', name="Flask")
 
 if __name__ == '__main__':
-    app.run(host="localhost", port=config['port'], debug=True)
+    app.run(host="0.0.0.0", port=config['port'], debug=True)