fix: 优化docker 镜像

Dockerfile

@@ -0,0 +1,25 @@
+# 前端 + API 一体化镜像（使用 DaoCloud 国内镜像源）
+FROM docker.m.daocloud.io/library/node:20-alpine AS frontend-builder
+WORKDIR /app
+ARG VITE_MAPBOX_ACCESS_TOKEN
+ENV VITE_MAPBOX_ACCESS_TOKEN=${VITE_MAPBOX_ACCESS_TOKEN}
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM docker.m.daocloud.io/library/node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci --omit=dev
+COPY --from=frontend-builder /app/dist ./dist
+COPY server ./server
+
+ENV NODE_ENV=production
+ENV API_PORT=3001
+ENV DB_PATH=/data/data.db
+EXPOSE 3001
+
+COPY docker-entrypoint.sh ./
+RUN chmod +x docker-entrypoint.sh
+ENTRYPOINT ["./docker-entrypoint.sh"]