fix: bind next.js standalone to 0.0.0.0 in docker

Dockerfile

@@ -21,6 +21,7 @@ FROM mcr.microsoft.com/playwright:v1.50.0-jammy AS runner
 WORKDIR /app
 ENV NODE_ENV=production
 ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
 COPY --from=build /app/.next/standalone ./
 COPY --from=build /app/.next/static ./.next/static
 COPY --from=build /app/public ./public

README.md

@@ -0,0 +1,21 @@
+# preis-tracker
+
+Tracking von Produktpreisen bei Amazon, Idealo, Geizhals mit Pushover-Alerts.
+
+## Stack
+Next.js 16, TypeScript, Drizzle + PostgreSQL, Playwright + Cheerio, Zitadel OIDC, iron-session, Recharts.
+
+## Dev
+
+```bash
+cp .env.example .env  # fill in
+bun install
+bunx playwright install chromium
+bun run db:push
+bun run dev
+```
+
+## Deploy
+Coolify-App `preis.kuns.dev`. Daily scrape via Scheduled Task `0 6 * * *`.
+
+Spec: `docs/superpowers/specs/2026-05-25-preis-tracker-design.md`