添加了dockerfile

Dockerfile

@@ -0,0 +1,28 @@
+FROM golang:1.20-alpine AS builder
+
+LABEL stage=gobuilder
+
+ENV CGO_ENABLED 0
+ENV GOPROXY https://goproxy.cn,direct
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
+
+RUN apk update --no-cache && apk add --no-cache tzdata
+
+WORKDIR /build
+
+ADD go.mod .
+ADD go.sum .
+RUN go mod download
+COPY . .
+RUN sh ./build.sh
+
+FROM alpine
+
+COPY --from=builder /usr/share/zoneinfo/Asia/Shanghai /usr/share/zoneinfo/Asia/Shanghai
+
+ENV TZ Asia/Shanghai
+
+WORKDIR /app
+COPY --from=builder /build/output /app
+
+CMD ["sh", "./bootstrap.sh"]