Responsive process image

Hello,
I'm trying to use a background image from another SCADA system in Perspective. It can be a PNG or SVG and on top of that, I want to place dynamic objects that display values and their exact placement are relevant.
I've succeeded if I let it be a specific size by placing an image component in the background, but it would be nice if the process image was responsive and adapted to the screen size.
I've come a bit on the way by using a flex container as root, in which I've placed a coordinate container with a background image, but when I then try to add dynamic objects such as LEDs etc and change the size of the window, they don't end up where I expect them to.
I found another post here on the topic, but unfortunately it didn't help me. Can anyone help me with some guidence?

For exact placement, you need a coordinate container. Flex containers simply won't do that.

Consider the Zoom container offered by BIJC--it handles exactly your case.