how to display an image at the bottom of a page inside of a container div that has a repeating background and min height

I am trying to add an image to the bottom of the left nav section on a page where I have a container with a background image that fills 100 percent of the browser height. For example, the background image that is being repeated within the container div has a light blue color on the left section which is about 200 pixels in width, and the rest of it is white.

How can I add an image to the left side and place it at the bottom of the page? I have tried adding a new div with 100 height applied but that doesn't work. It does not stretch to fill the height of the window.

Thanks in advance!