Feature: Site Build

Purpose

The project contains a static-site input directory (site.in/) and a generated static-site output directory (site.out/).

The Site Build feature provides the script that converts site.in/ into site.out/.

scripts/site-build.sh must generate the static site in site.out/ from the input in site.in/.
Each site.in/*.txt input file must produce site.out/<name>.html.
Generated output must be identified as generated.
The script must accept optional input and output directory arguments.
When no arguments are given, the script must use site.in/ and site.out/ relative to the repository root.
The script must be a POSIX shell script.
The HTML page structure must live in site.in/template.html, not in the build script.
site.in/template.html must contain the marker line  where page content is inserted.