优化 Dockerfile

Dockerfile

@@ -1,35 +1,31 @@
 # 第一阶段：构建
-FROM golang:1.24.0 AS builder
-
-ENV GOPROXY=https://goproxy.cn,direct
-
+FROM golang:1.25.3 AS builder
 WORKDIR /build
 
-# 复制Go模块文件
+ENV GOPROXY=https://goproxy.cn,direct
+ENV CGO_ENABLED=0
+ENV GOOS=linux
+ENV GOARCH=amd64
+
 COPY go.mod go.sum ./
 RUN go mod download
 
-# 复制源代码
 COPY . .
-
-# 编译
-RUN GOOS=linux GOARCH=amd64 go build -ldflags '-w -s' -o bin/platform_linux_amd64 cmd/main/main.go
+RUN go build -ldflags '-w -s' -o bin/platform_linux_amd64 cmd/main/main.go
 
 # 第二阶段：运行环境
-FROM ubuntu:24.04 AS runner
-
+FROM alpine:3.23 AS runner
 WORKDIR /app
 
-RUN apt-get update && apt-get install -y ca-certificates
+ENV TZ=Asia/Shanghai
+
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories
+RUN apk add --no-cache ca-certificates tzdata
 
-# 从构建阶段复制编译好的二进制文件
 COPY --from=builder /build/bin/platform_linux_amd64 /app/platform
 
-# 设置可执行权限
 RUN chmod +x /app/platform
 
-# 声明暴露端口
 EXPOSE 8080
 
-# 启动平台服务
 CMD ["/app/platform"]