limit the size of a button with an image

Problem:

I want to create an own widget that uses an image in an button. But the image causes the button to be way to big. How can I resize the button to the normal button size (the size if I use normal Text).

Code:

add = Button(master=controlfrm , image=myimagepath)
        add.pack()

Result:

Goal:

I want the image to be resized to a hight equal to the Entry widget.