FROM node:20-alpine as builder

WORKDIR /app

# 安装依赖（使用淘宝镜像）
COPY frontend/package.json ./
RUN npm config set registry https://registry.npmmirror.com && npm install

# 构建
COPY frontend/ .
RUN npm run build

# 生产镜像
FROM nginx:alpine

# 后端服务地址（通过 build-arg 传入，构建时替换）
ARG BACKEND_HOST=platform-backend-test

COPY --from=builder /app/dist /usr/share/nginx/html
COPY deploy/nginx/frontend.conf /etc/nginx/conf.d/default.conf

# 在构建时替换后端地址（只替换 BACKEND_HOST 变量）
RUN sed -i "s/\${BACKEND_HOST}/${BACKEND_HOST}/g" /etc/nginx/conf.d/default.conf

EXPOSE 80

CMD ["nginx", "-g", "daemon off;"]