Refactor container build and installation pipeline to use configurable Makefile parameters (e.g. DISTROS, base images) and propagate them through all build, install, and test scripts

scripts/installation/arch/dependencies.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+echo "[arch/dependencies] Installing Arch build dependencies..."
+
+pacman -Syu --noconfirm
+pacman -S --noconfirm --needed \
+  base-devel \
+  git \
+  rsync \
+  curl \
+  ca-certificates \
+  xz
+
+pacman -Scc --noconfirm
+
+# Always run AUR builder setup for Arch
+AUR_SETUP="${SCRIPT_DIR}/aur-builder-setup.sh"
+
+if [[ ! -x "${AUR_SETUP}" ]]; then
+  echo "[arch/dependencies] ERROR: AUR builder setup script not found or not executable: ${AUR_SETUP}"
+  exit 1
+fi
+
+echo "[arch/dependencies] Running AUR builder setup..."
+bash "${AUR_SETUP}"
+
+echo "[arch/dependencies] Done."