Automated local builds with Podman

The same infrastructure with Nix can be used to build the site locally using Podman to run a Nix container and use a single command to trigger a reproducible build. This requires local installation of Podman and pulling the guix container before running ./container/nix-container.sh.

Now the build sequence is a little longer but it is modular: ./container/nix-container.sh → ./container/nix-develop.sh → build.sh → build.el → MD → hugo → HTML.

Note: currently the Nix image doesn’t cache the derivations for the added packages from flake.nix: hugo and emacs29-nox. I’ll be looking into an “easy” caching solution.