Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
- Add a Nix flake devShell providing Forgejo CLI (fj) and Node.js - Document nix develop usage in README - Ignore common Nix artifacts in .gitignore
- Add Containerfile for running Astro dev server in a container - Add compose.yml (slirp4netns) for WSL2/rootless compatibility - Document Podman compose usage and troubleshooting steps in README - Ignore optional Podman env file in .gitignore