diff --git a/Dockerfile b/Dockerfile
index 007e009..6806e95 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,11 @@ RUN npm run build
 FROM node:22-slim AS runner
 WORKDIR /app
 ENV NODE_ENV=production
-RUN useradd --system --create-home appuser
+ENV PORT=3726
+ENV DATABASE_URL="file:/app/data/study.db"
+
+RUN useradd --system --create-home appuser && mkdir -p /app/data && chown -R appuser:appuser /app
+
 COPY --from=builder /app/.next/standalone ./
 COPY --from=builder /app/.next/static ./.next/static
 COPY --from=builder /app/public ./public
@@ -25,5 +29,6 @@ COPY --from=builder /app/prisma.config.ts ./
 COPY docker-entrypoint.sh ./
 RUN chmod +x docker-entrypoint.sh && chown -R appuser:appuser /app
 USER appuser
-EXPOSE 3000
+EXPOSE 3726
+VOLUME ["/app/data"]
 ENTRYPOINT ["./docker-entrypoint.sh"]