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## 多阶段构建,生成体积较小的运行镜像
# ---------- 构建阶段 ----------
FROM golang:1.24-alpine AS builder
WORKDIR /app
# 可选:安装常用工具(如需要拉取私有仓库可以打开 git)
# 这里主要保证 CA 证书正常,便于拉取依赖
RUN apk add --no-cache ca-certificates
# 先复制 go.mod / go.sum,加快依赖缓存
COPY go.mod go.sum ./
RUN go mod download
# 再复制剩余源码
COPY . .
# 编译为静态 Linux amd64 二进制
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o google-proxy .
# ---------- 运行阶段 ----------
FROM alpine:3.20
WORKDIR /app
# 安装 CA 证书和时区数据,保证 HTTPS 以及 TZ=Asia/Shanghai 正常
RUN apk add --no-cache ca-certificates tzdata && \
mkdir -p /app/logs
# 默认时区,可被环境变量覆盖
ENV TZ=Asia/Shanghai
# 拷贝编译好的二进制
COPY --from=builder /app/google-proxy /app/google-proxy
# 服务监听端口
EXPOSE 8080
# 入口命令
CMD ["/app/google-proxy"]