# 构建阶段
FROM golang:1.19-alpine AS builder

# 设置工作目录
WORKDIR /app

# 安装必要的包
RUN apk add --no-cache git

# 复制go mod文件
COPY go.mod go.sum ./

# 下载依赖
RUN go mod download

# 复制源代码
COPY . .

# 构建应用
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main cmd/server/main.go

# 运行阶段
FROM alpine:latest

# 安装ca证书
RUN apk --no-cache add ca-certificates

# 创建非root用户
RUN addgroup -g 1001 -S appgroup && \
    adduser -u 1001 -S appuser -G appgroup

# 设置工作目录
WORKDIR /app

# 从构建阶段复制二进制文件
COPY --from=builder /app/main .

# 复制配置文件和静态资源
COPY --from=builder /app/config ./config
COPY --from=builder /app/web ./web

# 创建必要的目录
RUN mkdir -p uploads logs && \
    chown -R appuser:appgroup /app

# 切换到非root用户
USER appuser

# 暴露端口
EXPOSE 8080

# 运行应用
CMD ["./main"]