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# 构建阶段
FROM golang:1.22-alpine AS builder
# 设置工作目录
WORKDIR /app
# 为了减少Docker层数,先复制 go.mod 和 go.sum 并下载依赖
COPY go.mod go.sum ./
RUN go mod download
# 复制源代码
COPY . .
# 编译Go应用,启用优化参数
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o ddg .
# 运行阶段
FROM alpine:3.18
# 设置工作目录
WORKDIR /app
# 将编译好的二进制文件从构建阶段复制过来
COPY --from=builder /app/ddg .
# 设置环境变量
ENV MAX_RETRY_COUNT=3
ENV RETRY_DELAY=5000
ENV PORT=7860
# 公开端口
EXPOSE 7860
# 确保二进制文件具有可执行权限
RUN chmod +x ddg
# 使用非 root 用户运行应用(增强安全性)
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
USER appuser
# 启动应用
ENTRYPOINT ["./ddg"]