🐳 新增Dockerfile

Dockerfile

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+FROM golang:alpine as builder
+MAINTAINER LiXunHuan(lxh@cxh.cn)
+# 创建工作目录，修改alpine源为中科大的源，安装必要工具
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories && \
+  apk update && \
+  apk upgrade && \
+  apk add ca-certificates gcc g++ && update-ca-certificates && \
+  apk add --update tzdata && \
+  rm -rf /var/cache/apk/*
+ENV TZ=Asia/Shanghai
+WORKDIR /builder
+COPY . .
+RUN go mod download && go build -o app
+RUN ls -lh && chmod +x ./app
+FROM golang:alpine as runner
+MAINTAINER LiXunHuan(lxh@cxh.cn)
+WORKDIR /app
+ENV TZ=Asia/Shanghai
+COPY --from=builder /builder/app ./app
+CMD ./app