test: add install.sh docker e2e smoke

scripts/test-install-sh-docker.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+IMAGE_NAME="${CLAWDBOT_INSTALL_SMOKE_IMAGE:-clawdbot-install-smoke:local}"
+INSTALL_URL="${CLAWDBOT_INSTALL_URL:-https://clawd.bot/install.sh}"
+
+echo "==> Build image: $IMAGE_NAME"
+docker build \
+  -t "$IMAGE_NAME" \
+  -f "$ROOT_DIR/scripts/docker/install-sh-smoke/Dockerfile" \
+  "$ROOT_DIR/scripts/docker/install-sh-smoke"
+
+echo "==> Run installer smoke test: $INSTALL_URL"
+docker run --rm -t \
+  -e CLAWDBOT_INSTALL_URL="$INSTALL_URL" \
+  "$IMAGE_NAME"