40 lines
1.0 KiB
Docker
40 lines
1.0 KiB
Docker
# ==== 第一阶段: 编译打包层 ====
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FROM golang:1.21-alpine AS builder
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# 配置国内高速 Go 代理环境，开启跨平台交叉编译所需变量
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ENV GO111MODULE=on \
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CGO_ENABLED=0 \
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GOOS=linux \
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GOARCH=amd64 \
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GOPROXY=https://goproxy.cn,direct
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WORKDIR /app
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# 优先缓存和下载项目依赖
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COPY go.mod go.sum ./
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RUN go mod download
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# 载入完整代码并执行剥离调试信息的极限压缩静态编译 (-ldflags="-w -s")
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COPY . .
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RUN go build -ldflags="-w -s" -o imagehost ./cmd/main.go
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# ==== 第二阶段: 纯净运行环境层 ====
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FROM alpine:latest
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# 123云盘采用硬 TLS 协议，必须拉取 ca-certificates，否则网络连接拦截报错
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# TZdata 用于纠正容器运行内的时间对齐，保障授权握手不过期
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RUN apk --no-cache add ca-certificates tzdata
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ENV TZ=Asia/Shanghai
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WORKDIR /app
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# 将上一阶段萃取好的精华可执行程序抓取过来
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COPY --from=builder /app/imagehost .
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# 暴露对外的 HTTP 接口
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EXPOSE 8080
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# 触发点火
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CMD ["./imagehost"]
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