prepared dot files

docker/Dockerfile

@@ -0,0 +1,8 @@
+FROM archlinux:base-devel
+
+RUN pacman -Sy --noconfirm stow nodejs npm git sudo \
+    && useradd -m tester \
+    && echo 'tester ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers
+
+USER tester
+WORKDIR /home/tester

docker/test.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Disposable Arch container for testing the installer without touching the host.
+# Usage:
+#   ./docker/test.sh                  # interactive shell, deps installed
+#   ./docker/test.sh "npx tsc --noEmit"   # run one command non-interactively
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+docker build -t dotfiles-test -f docker/Dockerfile .
+
+tty_flags=(-i)
+[ -t 0 ] && [ -t 1 ] && tty_flags+=(-t)
+
+docker run --rm "${tty_flags[@]}" -v "$PWD":/src:ro dotfiles-test \
+  bash -lc 'cp -r /src ~/DotFiles && cd ~/DotFiles && npm install && exec bash -c "$1"' -- "${1:-bash}"