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# ============================================================
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# Dockerfile:EasyGoAdmin 后端镜像(多阶段构建)
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# 构建命令(上下文为项目根目录,在项目根执行):
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# docker build -f docker/Dockerfile -t easygoadmin:latest .
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#
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# 设计要点
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# - 纯 Go 项目(sqlite 驱动为 modernc 系,无 CGO),CGO_ENABLED=0 静态编译
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# - builder 只负责编译,runtime 仅含二进制 + 运行时资产,镜像最小化
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# - 运行时资产四件:manifest/config、manifest/data(ip2region.xdb)、
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# resource(字体/swagger)、templates(代码生成器模板)
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# - 敏感配置不改镜像内文件,运行时用 GF_GENV_ 前缀环境变量覆盖
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# (见 manifest/config/config.yaml 头部说明)
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# - 源码 COPY 放在依赖下载之后,保护 go mod 层缓存
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#
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# 构建参数
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# VAR_PORT 应用监听端口
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# ============================================================
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# ------------------------------------------------------------
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# 全局构建参数
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# 在 FROM 之前声明,可供后续各阶段引用
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# ------------------------------------------------------------
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ARG VAR_GOLANG_IMAGE=golang:1.27-alpine
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ARG VAR_RUNTIME_IMAGE=alpine:3.22
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ARG VAR_PORT=8000
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# ============================================================
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# 阶段一:builder —— 编译静态二进制
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# ============================================================
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FROM ${VAR_GOLANG_IMAGE} AS builder
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LABEL MAINTAINER="easygoadmin@163.com"
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# 国内代理:加速 go mod 下载(海外环境可改为 https://proxy.golang.org,direct)
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ENV GOPROXY=https://goproxy.cn,direct \
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GO111MODULE=on \
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CGO_ENABLED=0 \
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GOOS=linux
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WORKDIR /build
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# 先拷依赖清单,利用层缓存:源码变更但 go.mod/go.sum 未变时不重复下载
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COPY go.mod go.sum ./
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RUN go mod download
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# 拷源码并编译(-trimpath 去除本地路径,-s -w 去除符号表与调试信息)
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COPY . .
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RUN go build -trimpath -ldflags "-s -w" -o /build/bin/admin-server main.go
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# ============================================================
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# 阶段二:runtime —— 最终业务镜像
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# ============================================================
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FROM ${VAR_RUNTIME_IMAGE} AS runtime
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LABEL MAINTAINER="easygoadmin@163.com"
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# 时区(应用配置 app.timezone=Asia/Shanghai,日志与定时任务依赖系统时区)
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ENV TZ=Asia/Shanghai
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# tzdata 提供时区数据库;ca-certificates 供 HTTPS 外呼(无外呼场景可去掉)
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RUN set -eux; \
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sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories; \
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apk add --no-cache tzdata ca-certificates; \
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# 非 root 运行(低权限用户跑业务)
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addgroup -g 1000 app && adduser -u 1000 -G app -s /sbin/nologin -D app; \
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ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
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WORKDIR /opt/easygoadmin
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# 运行时资产(先于二进制 COPY,业务代码变动不破坏资产层缓存)
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COPY --chown=app:app manifest/config ./manifest/config
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COPY --chown=app:app manifest/data ./manifest/data
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COPY --chown=app:app resource ./resource
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COPY --chown=app:app templates ./templates
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# 二进制
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COPY --chown=app:app --from=builder /build/bin/admin-server ./bin/admin-server
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# 上传目录与日志目录:预建并授权,compose 挂载宿主卷时属主一致
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RUN mkdir -p /data/upload /opt/easygoadmin/log && \
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chown -R app:app /data/upload /opt/easygoadmin/log
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USER app
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# ARG 转 ENV,运行期与 compose/HEALTHCHECK 可读
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ENV VAR_PORT=${VAR_PORT}
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EXPOSE ${VAR_PORT}
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# 健康检查(/api/health 为公开白名单路径,不带 /v1)
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HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
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CMD wget -qO- "http://127.0.0.1:${VAR_PORT}/api/health" || exit 1
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# 前台运行;优雅重启由框架 graceful 配置处理
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ENTRYPOINT ["./bin/admin-server"]
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