添加 Dockerfile

Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:1.25-alpine AS builder
+WORKDIR /build
+COPY main.go .
+RUN go build -ldflags="-s -w" -o app main.go
+
+FROM alpine:latest
+WORKDIR /app
+COPY --from=builder /build/app .
+RUN chmod +x app
+EXPOSE 8080
+CMD ["./app"]