Rendering childMarkdownRemark.html that contains external images

I have markdown in Contentful that contains external images.

I’m displaying the markdown on my page using childMarkdownRemark.html

    __html: data.contentfulCaseStudy.body.childMarkdownRemark.html,

This however does not lazy-load / scale up the images like you see using gatsby-image API.

Is this possible? Should this plugin do this?