重新整理物联网服务,分离业务逻辑。
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# ==========================
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# Stage 1: Build the Go binary
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# ==========================
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FROM golang:1.21-alpine AS builder
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# 设置工作目录
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WORKDIR /build
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# 复制 go.mod 和 go.sum,先做依赖缓存
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COPY go.mod go.sum ./
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# 下载依赖(缓存层)
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RUN go mod download
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# 复制源代码
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COPY app/ ./app
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# 编译可执行文件
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RUN go build -o sentinel ./app/main.go
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# ==========================
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# Stage 2: 生成最终运行镜像
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# ==========================
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FROM alpine:3.18
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# 安装 ca-certificates,如果程序需要访问 HTTPS
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RUN apk add --no-cache ca-certificates
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# 设置工作目录
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WORKDIR /app
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# 复制从 builder 构建好的二进制
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COPY --from=builder /build/sentinel .
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# 设置默认执行命令
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CMD ["./sentinel"]
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