Scrollable Container inside a Column

I tried a few different approaches but I can't get this to work. The layout I want to achieve is really simple and it's a breeze to implement in native Android:

• Fixed Container on top (blue)
• Scrollable Container below (red). A ListView won't work in my case.

I tried to use SingleChildScrollView, but it doesn't seem to work inside a Column. Maybe I'm doing something wrong or I'm not using the right widgets...

My result:

Scaffold(  body: Column(    children: <Widget>[      Container(        height: 100.0,        color: Colors.blue,      ),      SingleChildScrollView(        child: Container(          color: Colors.red,          padding: EdgeInsets.all(20.0),          child: Column(            children: <Widget>[              Text('Red container should be scrollable'),              Container(                width: double.infinity,                height: 700.0,                padding: EdgeInsets.all(10.0),                color: Colors.white.withOpacity(0.7),                child: Text('I will have a column here'),              )            ],          ),        ),      ),    ],  ),)