add Dockerfile

Dockerfile

@@ -0,0 +1,16 @@
+FROM golang:1.13.8 as builder
+WORKDIR /go/src/app
+COPY . .
+RUN CGO_ENABLED=0 make
+
+FROM alpine:3.11.3
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories \
+    && apk update \
+    && apk add tzdata \
+    && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
+    && echo "Asia/Shanghai" > /etc/timezone
+RUN mkdir -p /etc/kingshard
+
+COPY --from=builder /go/src/app/bin/kingshard /usr/local/bin/
+COPY --from=builder /go/src/app/etc/ks.yaml /etc/kingshard/
+CMD kingshard -config=/etc/kingshard/ks.yaml