update: docker build script

Dockerfile

@@ -1,9 +1,9 @@
-FROM alpine:3.15 as asset
+FROM golang:1.17.8-alpine3.15 AS asset
 COPY . /tmp/TProxy
 ENV UPX_VERSION="3.96"
 ENV XRAY_VERSION="v1.5.3"
 RUN \
-  apk add build-base bash make curl go git perl ucl-dev zlib-dev && \
+  apk add build-base bash make curl git perl ucl-dev zlib-dev && \
   \
   # upx compile
   wget https://github.com/upx/upx/releases/download/v${UPX_VERSION}/upx-${UPX_VERSION}-src.tar.xz -P /tmp/ && \
@@ -12,25 +12,24 @@ RUN \
   mv ./src/upx.out /usr/bin/upx && \
   \
   # xray-core compile
-  mkdir -p /tmp/asset/usr/bin/ && mkdir -p /tmp/asset/run/radvd/ && \
+  mkdir -p /asset/usr/bin/ && mkdir -p /asset/run/radvd/ && \
   git clone https://github.com/XTLS/Xray-core.git /tmp/Xray-core && \
   cd /tmp/Xray-core/ && git checkout $XRAY_VERSION && \
   env CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w" ./main && \
-  upx -9 ./xray && mv ./xray /tmp/asset/usr/bin/ && \
+  upx -9 ./xray && mv ./xray /asset/usr/bin/ && \
   \
   # asset download
-  mkdir -p /tmp/asset/etc/xray/asset/ && cd /tmp/asset/etc/xray/asset/ && \
-  GEO_VERSION=$(curl -sL "https://api.github.com/repos/Loyalsoldier/v2ray-rules-dat/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/') && \
-  wget "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/download/$GEO_VERSION/geoip.dat" && \
-  wget "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/download/$GEO_VERSION/geosite.dat" && \
-  cd /tmp/asset/etc/xray/ && tar czf asset.tar.gz asset/ && rm -rf asset/ && \
+  mkdir -p /asset/etc/xray/asset/ && cd /asset/etc/xray/asset/ && \
+  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" && \
+  cd /asset/etc/xray/ && tar czf asset.tar.gz ./asset/ && rm -rf ./asset/ && \
   \
   # init script
-  mv /tmp/TProxy/load.sh /tmp/asset/etc/xray/ && chmod +x /tmp/asset/etc/xray/load.sh && \
-  mv /tmp/TProxy/tproxy.sh /tmp/asset/tproxy && chmod +x /tmp/asset/tproxy
+  mv /tmp/TProxy/load.sh /asset/etc/xray/ && chmod +x /asset/etc/xray/load.sh && \
+  mv /tmp/TProxy/tproxy.sh /asset/tproxy && chmod +x /asset/tproxy
 
-FROM alpine:3.15
-COPY --from=asset /tmp/asset/ /
+FROM alpine:3.15.2
+COPY --from=asset /asset/ /
 ENV XRAY_LOCATION_ASSET=/etc/xray/asset
 RUN apk add --no-cache iptables ip6tables radvd
 ENTRYPOINT ["sh","tproxy"]