Hosting images on another site (icons, specifically)

When I write help material with the steps a user takes in the UI of my product, I try to include in-line 24px × 24px .svg icons from the product itself.

I'd like to host these images somewhere and use the same <img src="URL"> each time I need to include the icon. This way, if the product UI changes, I can replace the image file where it's hosted just once, rather than making manual swaps on every help center article. (I'd just keep the images on Zendesk, but it does not currently have the function to replace image files while keeping the same path/URL.)

Is anyone else using a similar system? If so, where do you store the images? (I hope someone out there has a more sophisticated solution than Google Drive!)

Thanks.