fix(ci): guard browser context cleanup and export news e2e env before build

scripts/ci-preflight.sh

@@ -36,7 +36,8 @@ trap 'exit 143' TERM
 
 pnpm install --frozen-lockfile
 pnpm exec playwright install chromium
-build_attempted=1
+export NEWS_E2E_IMAGE="$image"
+export NEWS_E2E_RELEASE="$sha"
 DOCKER_BUILDKIT=1 docker build --network=host --progress=plain \
   --build-arg NEXT_DEPLOYMENT_ID="$sha" -t "$image" .
-NEWS_E2E_IMAGE="$image" NEWS_E2E_RELEASE="$sha" node --import tsx e2e/news-real/run.ts
+NEWS_E2E_IMAGE="$image" NEWS_E2E_RELEASE="$sha" node --import tsx e2e/news-real/run.ts