Behebe Frontend-Build und Datenbankmigrationen im Docker-Container

- Füge pnpm build zum Dockerfile hinzu, um das fehlende .next-Verzeichnis zu erstellen
- Ersetze problematische drizzle-kit CLI-Befehle durch direkte Node.js-Implementation
- Verwende CommonJS-require statt ES-Module für bessere Kompatibilität
- Verbessere Fehlerbehandlung während der Datenbankmigrationen

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/reservation-platform/Dockerfile

@@ -24,6 +24,9 @@ COPY . .
 # Create database directory
 RUN mkdir -p db/
 
+# Build the Next.js application
+RUN pnpm build
+
 # Expose the port
 EXPOSE 3000
 
@@ -33,8 +36,8 @@ RUN echo '#!/bin/sh' > /app/startup.sh && \
     echo 'mkdir -p /app/db' >> /app/startup.sh && \
     echo 'echo "Starting application..."' >> /app/startup.sh && \
     echo 'echo "Attempting database migration..."' >> /app/startup.sh && \
-    echo 'npx drizzle-kit generate --schema=./src/server/db/schema.ts || echo "Generate schema failed, but continuing..."' >> /app/startup.sh && \
-    echo 'npx drizzle-kit push:sqlite || echo "Push migration failed, but continuing..."' >> /app/startup.sh && \
+    echo 'NODE_ENV=production node -e "const { migrate } = require(\"drizzle-orm/better-sqlite3/migrator\"); const { db } = require(\"./src/server/db/index.js\"); try { console.log(\"Running migrations...\"); migrate(db, { migrationsFolder: \"./drizzle\" }); console.log(\"Migrations completed\"); } catch(e) { console.error(\"Migration error:\", e); }"' >> /app/startup.sh && \
+    echo 'echo "Migration completed or skipped"' >> /app/startup.sh && \
     echo 'pnpm start' >> /app/startup.sh && \
     chmod +x /app/startup.sh