In order to promote a smooth transition to the docusaurus implementation of wazo-platform.org, we should find a way to support the rendering of mermaid blocks, which is supported by docusaurus, for the gatsby-based website.

gatsby plugins may be a solution, but some trial encountered issues.

A more basic approach is to implement a pre-process step before the gatsby build to extract the mermaid code blocks from the markdown and replace them with a SVG rendering.
e.g.