build: update docker file

Dockerfile

@@ -3,7 +3,7 @@ ARG GOLANG="golang:1.20-alpine3.17"
 
 FROM ${GOLANG} AS xray
 ENV XRAY="1.8.0"
-RUN wget https://github.com/XTLS/Xray-core/archive/refs/tags/v${XRAY}.tar.gz && tar xf v${XRAY}.tar.gz
+RUN wget https://github.com/XTLS/Xray-core/archive/v${XRAY}.tar.gz -O- | tar xz
 WORKDIR ./Xray-core-${XRAY}/main/
 RUN go get
 RUN env CGO_ENABLED=0 go build -v -trimpath -ldflags "-s -w" && mv main /tmp/xray
@@ -13,14 +13,18 @@ RUN apk add git
 COPY ./ /XProxy/
 WORKDIR /XProxy/cmd/
 RUN go get
-RUN env CGO_ENABLED=0 go build -v -trimpath -ldflags "-X main.version=$(git describe --tag) -s -w" && mv cmd /tmp/xproxy
+RUN env CGO_ENABLED=0 go build -v -trimpath -ldflags "-X main.version=$(git describe --tag) -s -w"
+RUN mv cmd /tmp/xproxy
+
+FROM ${ALPINE} AS geo-data
+RUN apk add xz
+RUN wget "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat"
+RUN wget "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat"
+RUN tar cJf /tmp/assets.tar.xz geoip.dat geosite.dat
 
 FROM ${ALPINE} AS build
-RUN apk add upx xz
-WORKDIR /release/
-RUN wget "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat" && \
-    wget "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat" && \
-    tar cJf assets.tar.xz *.dat && rm *.dat
+RUN apk add upx
+COPY --from=geo-data /tmp/assets.tar.xz /release/
 COPY --from=xproxy /tmp/xproxy /release/usr/bin/
 COPY --from=xray /tmp/xray /release/usr/bin/
 WORKDIR /release/usr/bin/