update migration tool url (#28)

build/scripts/migration/script.d/01-migrate-gateway.sh

@@ -56,6 +56,21 @@ __is_migration_needed() {
 
     __is_version_gt "${version2}" "${version1}"
 }
+__get_download_domain(){
+    local region
+    # Use ipconfig.io/country and https://ifconfig.io/country_code to get the country code
+    region=$(curl --connect-timeout 2 -s ipconfig.io/country || echo "")
+    if [ "${region}" = "" ]; then
+       region=$(curl --connect-timeout 2 -s https://ifconfig.io/country_code || echo "")
+    fi
+    if [[ "${region}" = "China" ]] || [[ "${region}" = "CN" ]]; then
+        echo "https://casaos.oss-cn-shanghai.aliyuncs.com/"
+    else
+        echo "https://github.com/"
+    fi
+}
+
+DOWNLOAD_DOMAIN=$(__get_download_domain)
 
 BUILD_PATH=$(dirname "${BASH_SOURCE[0]}")/../../..
 
@@ -162,7 +177,7 @@ pushd "${MIGRATION_SERVICE_DIR}"
             continue
         fi
 
-        MIGRATION_TOOL_URL=https://github.com/IceWhaleTech/"${APP_NAME_FORMAL}"/releases/download/"${VER2}"/linux-"${ARCH}"-"${APP_NAME}"-migration-tool-"${VER2}".tar.gz
+        MIGRATION_TOOL_URL=${DOWNLOAD_DOMAIN}IceWhaleTech/"${APP_NAME_FORMAL}"/releases/download/"${VER2}"/linux-"${ARCH}"-"${APP_NAME}"-migration-tool-"${VER2}".tar.gz
         __info "Dowloading ${MIGRATION_TOOL_URL}..."
         curl -sL -O "${MIGRATION_TOOL_URL}"
     done