添加dockerfile
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Dockerfile
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# 阶段1:编译 Go 程序(使用 Go 1.24 系列的 alpine 镜像,自动拉取最新小版本)
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FROM golang:1.24-alpine AS builder
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WORKDIR /app
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# 复制依赖文件
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COPY go.mod go.sum ./
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# 国内代理加速依赖下载(可选但推荐)
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ENV GOPROXY=https://goproxy.cn,direct
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# 下载依赖
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RUN go mod download
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# 复制代码并编译(关闭 CGO 确保镜像可移植)
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COPY . .
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RUN CGO_ENABLED=0 GOOS=linux go build -o main .
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# 阶段2:构建轻量级运行镜像
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FROM alpine:3.18
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WORKDIR /app
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# 从编译阶段复制二进制文件
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COPY --from=builder /app/main .
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# 可选:配置时区(避免日志时间异常)
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RUN apk add --no-cache tzdata && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
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# 启动程序
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CMD ["./main"]
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