build: combine upx compact process

Dockerfile

@@ -1,3 +1,5 @@
+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 && \
@@ -8,41 +10,33 @@ WORKDIR ./upx-${UPX_VERSION}-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:1.18-alpine3.16 AS xray
+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/
-COPY --from=upx /upx/ /usr/
-RUN upx -9 /tmp/xray
 
-FROM golang:1.18-alpine3.16 AS v2ray
+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/
-COPY --from=upx /upx/ /usr/
-RUN upx -9 /tmp/v2ray
 
-FROM golang:1.18-alpine3.16 AS sagray
+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/
-COPY --from=upx /upx/ /usr/
-RUN upx -9 /tmp/sagray
 
-FROM golang:1.18-alpine3.16 AS xproxy
+FROM ${GOLANG_IMG} AS xproxy
 COPY . /XProxy
 WORKDIR /XProxy
 RUN go mod download -x
 RUN env CGO_ENABLED=0 go build -v -o xproxy -trimpath \
-    -ldflags "-X 'main.goVersion=$(go version)' -s -w" ./cmd/ && mv ./xproxy /tmp/
-COPY --from=upx /upx/ /usr/
-RUN upx -9 /tmp/xproxy
+      -ldflags "-X 'main.goVersion=$(go version)' -s -w" ./cmd/ && mv ./xproxy /tmp/
 
 FROM alpine:3.16 AS asset
 WORKDIR /tmp/
@@ -54,6 +48,8 @@ COPY --from=xproxy /tmp/xproxy /asset/usr/bin/
 COPY --from=sagray /tmp/sagray /asset/usr/bin/
 COPY --from=v2ray /tmp/v2ray /asset/usr/bin/
 COPY --from=xray /tmp/xray /asset/usr/bin/
+COPY --from=upx /upx/ /usr/
+RUN ls /asset/usr/bin/* | xargs -P0 -n1 upx -9
 
 FROM alpine:3.16
 RUN apk add --no-cache dhcp iptables ip6tables radvd && \