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# 多阶段构建,优化镜像大小
# 阶段1:构建阶段
FROM golang:1.21-alpine AS builder
# 安装构建依赖
RUN apk add --no-cache gcc musl-dev sqlite-dev
# 设置工作目录
WORKDIR /app
# 复制Go源代码文件
COPY *.go ./
# 设置Go环境变量和代理
ARG TARGETOS
ARG TARGETARCH
ENV CGO_ENABLED=1 GOOS=${TARGETOS} GOARCH=${TARGETARCH}
ENV GOPROXY=https://goproxy.cn,direct
ENV GOSUMDB=sum.golang.google.cn
# 初始化Go模块、下载依赖并构建应用
RUN go mod init go4wol && \
go get github.com/mattn/go-sqlite3@v1.14.22 && \
go mod tidy && \
go build -a -o go4wol .
# 阶段2:运行阶段
FROM alpine:latest
# 安装必要的运行时依赖
RUN apk --no-cache add ca-certificates tzdata sqlite
# 设置时区为Asia/Shanghai(适合群晖用户)
RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
echo "Asia/Shanghai" > /etc/timezone
# 创建非root用户和数据目录
RUN addgroup -g 1000 appgroup && \
adduser -u 1000 -G appgroup -s /bin/sh -D appuser && \
mkdir -p /data && \
chown -R appuser:appgroup /data && \
chmod -R 755 /data
# 设置工作目录
WORKDIR /app
# 从构建阶段复制编译好的二进制文件
COPY --from=builder /app/go4wol .
# 修改权限
RUN chown -R appuser:appgroup /app && \
chmod +x go4wol
# 切换到非root用户
USER appuser
# 暴露端口
EXPOSE 52133
# 健康检查
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
CMD wget --quiet --tries=1 --spider http://localhost:52133/health || exit 1
# 启动应用
CMD ["./go4wol"]