Bootstrap panel fit to page height

I want the panel and image to be at a fixed height so that it is not larger than the page and there is no scrollbar. How would I archive this?

<div class="container">
            <div class="col-md-8">
            <div class="panel panel-primary">
                <div class="panel-heading">Panel</div>
                <div class="panel-body">
                    <img src="http://ift.tt/2lcX3KV" width="100%" height="100%">
                </div>
            </div>
        </div>
</div>

http://ift.tt/2mjqBvG