chore(webapp): 删除旧版docker推送脚本并添加多架构构建脚本

删除单架构docker推送脚本(docker-push-arm64.sh和docker-push-x86_64.sh)，新增支持多平台构建推送的docker_build_and_push_multiarch.sh脚本

chinaport-data-signature-webapp/docker-push-arm64.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-TAG="1.2.0"
-docker stop chinaport-data-signature && docker rm -f chinaport-data-signature
-docker rmi -f weasleyj/chinaport-data-signature:${TAG}-arm64
-docker build -t weasleyj/chinaport-data-signature:${TAG}-arm64 . -f ./Dockerfile
-docker login -u weasleyj
-docker push weasleyj/chinaport-data-signature:${TAG}-arm64
-exit 0

chinaport-data-signature-webapp/docker-push-x86_64.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-TAG="1.2.0"
-docker stop chinaport-data-signature && docker rm -f chinaport-data-signature
-docker rmi -f weasleyj/chinaport-data-signature:${TAG}
-docker build -t weasleyj/chinaport-data-signature:${TAG} . -f ./Dockerfile
-docker login -u weasleyj
-docker push weasleyj/chinaport-data-signature:${TAG}
-exit 0

chinaport-data-signature-webapp/docker_build_and_push_multiarch.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+TAG="1.2.0"
+IMAGE="weasleyj/chinaport-data-signature"
+
+# 可选：先移除旧容器和镜像
+docker stop chinaport-data-signature 2>/dev/null && docker rm -f chinaport-data-signature 2>/dev/null
+
+# 登录一次即可
+docker login -u weasleyj
+
+# 多平台构建并推送（arm64 + amd64），如只需 arm64 可调整
+docker buildx build \
+  --platform linux/amd64,linux/arm64 \
+  -t ${IMAGE}:${TAG} \
+  --push \
+  -f ./Dockerfile .