double-daruma

Using [Handlebars](https://github.com/sunng87/handlebars-rust) or [Terra](https://github.com/Keats/tera) might be easier than implementing SSI as there are already implementations that are widely used. Are there things that SSI can do that Rust template engines...

Does anyone know how the docker images linked on https://bluemaxima.org/flashpoint/datahub/Linux_Support are created? I suppose those could be used as a starting point for how to flatpak this?