build: reduce go build download

Dockerfile

@@ -1,48 +1,45 @@
 ARG GOLANG_IMG="golang:1.18-alpine3.16"
 
 FROM alpine:3.16 AS upx
-ENV UPX_VERSION="3.96"
-RUN sed -i 's/v3.\d\d/v3.15/' /etc/apk/repositories && \
-    apk add bash build-base perl ucl-dev zlib-dev
-RUN wget https://github.com/upx/upx/releases/download/v${UPX_VERSION}/upx-${UPX_VERSION}-src.tar.xz && \
-    tar xf upx-${UPX_VERSION}-src.tar.xz
-WORKDIR ./upx-${UPX_VERSION}-src/
+ENV UPX_VER="3.96"
+RUN sed -i 's/v3.\d\d/v3.15/' /etc/apk/repositories && apk add bash build-base perl ucl-dev zlib-dev
+RUN wget https://github.com/upx/upx/releases/download/v${UPX_VER}/upx-${UPX_VER}-src.tar.xz && tar xf upx-${UPX_VER}-src.tar.xz
+WORKDIR ./upx-${UPX_VER}-src/
 RUN make -C ./src/ && mkdir -p /upx/bin/ && mv ./src/upx.out /upx/bin/upx && \
     mkdir -p /upx/lib/ && cd /usr/lib/ && cp -d ./libgcc_s.so* ./libstdc++.so* ./libucl.so* /upx/lib/
 
 FROM ${GOLANG_IMG} AS xray
-ENV XRAY_VERSION="1.5.10"
-RUN wget https://github.com/XTLS/Xray-core/archive/refs/tags/v${XRAY_VERSION}.tar.gz && tar xf v${XRAY_VERSION}.tar.gz
-WORKDIR ./Xray-core-${XRAY_VERSION}/
-RUN go mod download -x
-RUN env CGO_ENABLED=0 go build -v -o xray -trimpath -ldflags "-s -w" ./main/ && mv ./xray /tmp/
+ENV XRAY_VER="1.5.10"
+RUN wget https://github.com/XTLS/Xray-core/archive/refs/tags/v${XRAY_VER}.tar.gz && tar xf v${XRAY_VER}.tar.gz
+WORKDIR ./Xray-core-${XRAY_VER}/main/
+RUN go get -d
+RUN env CGO_ENABLED=0 go build -v -o xray -trimpath -ldflags "-s -w" && mv xray /tmp/
 
 FROM ${GOLANG_IMG} AS v2ray
-ENV V2FLY_VERSION="5.1.0"
-RUN wget https://github.com/v2fly/v2ray-core/archive/refs/tags/v${V2FLY_VERSION}.tar.gz && tar xf v${V2FLY_VERSION}.tar.gz
-WORKDIR ./v2ray-core-${V2FLY_VERSION}/
-RUN go mod download -x
-RUN env CGO_ENABLED=0 go build -v -o v2ray -trimpath -ldflags "-s -w" ./main/ && mv ./v2ray /tmp/
+ENV V2FLY_VER="5.1.0"
+RUN wget https://github.com/v2fly/v2ray-core/archive/refs/tags/v${V2FLY_VER}.tar.gz && tar xf v${V2FLY_VER}.tar.gz
+WORKDIR ./v2ray-core-${V2FLY_VER}/main/
+RUN go get -d
+RUN env CGO_ENABLED=0 go build -v -o v2ray -trimpath -ldflags "-s -w" && mv v2ray /tmp/
 
 FROM ${GOLANG_IMG} AS sagray
-ENV SAGER_VERSION="5.0.16"
-RUN wget https://github.com/SagerNet/v2ray-core/archive/refs/tags/v${SAGER_VERSION}.tar.gz && tar xf v${SAGER_VERSION}.tar.gz
-WORKDIR ./v2ray-core-${SAGER_VERSION}/
-RUN go mod download -x
-RUN env CGO_ENABLED=0 go build -v -o sagray -trimpath -ldflags "-s -w" ./main/ && mv ./sagray /tmp/
+ENV SAGER_VER="5.0.16"
+RUN wget https://github.com/SagerNet/v2ray-core/archive/refs/tags/v${SAGER_VER}.tar.gz && tar xf v${SAGER_VER}.tar.gz
+WORKDIR ./v2ray-core-${SAGER_VER}/main/
+RUN go get -d
+RUN env CGO_ENABLED=0 go build -v -o sagray -trimpath -ldflags "-s -w" && mv sagray /tmp/
 
 FROM ${GOLANG_IMG} AS xproxy
 COPY . /XProxy
-WORKDIR /XProxy
-RUN go mod download -x
-RUN env CGO_ENABLED=0 go build -v -o xproxy -trimpath -ldflags "-s -w" ./cmd/ && mv ./xproxy /tmp/
+WORKDIR /XProxy/cmd/
+RUN go get -d
+RUN env CGO_ENABLED=0 go build -v -o xproxy -trimpath -ldflags "-s -w" && mv xproxy /tmp/
 
 FROM alpine:3.16 AS asset
 WORKDIR /tmp/
-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 mkdir -p /asset/ && tar cJf /asset/assets.tar.xz ./*.dat
+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"
+RUN apk add xz && mkdir -p /asset/ && tar cJf /asset/assets.tar.xz ./*.dat
 COPY --from=xproxy /tmp/xproxy /asset/usr/bin/
 COPY --from=sagray /tmp/sagray /asset/usr/bin/
 COPY --from=v2ray /tmp/v2ray /asset/usr/bin/