20 lines
635 B
Docker
20 lines
635 B
Docker
# syntax=docker/dockerfile:1
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# ---------- 构建阶段：带完整 Go 工具链 ----------
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FROM golang:1.26-alpine AS build
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WORKDIR /src
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# 先只复制依赖描述文件，依赖不变时这一层可以复用缓存
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COPY go.mod ./
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RUN go mod download
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COPY . .
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# 静态编译，去掉调试信息减小体积
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RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/api .
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# ---------- 运行阶段：只放二进制 ----------
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FROM gcr.io/distroless/static-debian12:nonroot
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COPY --from=build /out/api /api
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ENV PORT=8080
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EXPOSE 8080
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USER nonroot:nonroot
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# exec 形式，进程是 PID 1，能直接收到 SIGTERM
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ENTRYPOINT ["/api"]
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