Version 0.2.1 fixed Nix build permission issues.

### Changed

- Set `NIX_REMOTE=daemon` explicitly.

### Fixed

- Fix permissions issues in building files
  ([#5](#5)).

Expand README with features and alternatives

Version 0.2 fixes a number of issues I uncovered

after trying out the image in my own projects.
This release also adds [Lorri](https://github.com/nix-community/lorri)
and multi-user Nix support.

### Added

- Provide system-wide Git and Nix in `PATH` at `/opt/sw/bin`.
  This is managed as the default Nix profile and linked in `/root/.nix-profile`.
- Automatically run [Lorri](https://github.com/nix-community/lorri) on startup
  ([#2](#2)).
- Install [procps](https://gitlab.com/procps-ng/procps) and
  [psmisc](https://gitlab.com/psmisc/psmisc) in the user profile.

### Changed

- Nix is now a multi-user installation.

### Fixed

- Provide Git that is accessible for Codespaces dotfiles clone
  ([#3](#3)).
- Set `LOCALE_ARCHIVE` environment variable.

Version 0.1.1 fixes problems with the image's metadata.

### Fixed

- Fixed invalid JSON in `devcontainer.metadata` label
  ([#1](#1)).

Remove mounts

Codespaces already handles /tmp,
and it seems to break for /run because it inserts src=undefined.

Fixes #1

Remove trailing comma

Add missing brackets to version link

Move environment scripts under profile.d directory

Fix ignore pattern