I'm trying to build a basic documentation site using asciidoctor. One thing I am struggling with is how I can inject a standard site header (a banner with a logo and top-level navigation) into each documentation page.
I render my asciidoc directly to html from the command line. I have tried to find a way to somehow inject an extra div element and position it fixed at the top, but I can't figure out what mechanism to use for this. My early attempts involved using docinfo.html but that gets injected into the html in the <head> element, instead of the <body>.
I am aware that full-on publication systems like Jekyll allow me to configure "front matter" that can probably take care of this, but I was hoping there was a mechanism or trick using vanilla asciidoctor that can achieve this.