Configure private registry and Git repository

Co-authored-by: Cursor <cursoragent@cursor.com>

.registry-config.example

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+# Docker Registry 配置文件模板
+# 复制此文件为 .registry-config（不提交到 Git）
+
+# 私有 Docker Registry 配置
+REGISTRY_URL=your-registry.com
+REGISTRY_USERNAME=your-username
+REGISTRY_PASSWORD=your-password
+
+# 完整 Registry 地址
+REGISTRY_FULL=https://your-registry.com
+
+# 镜像命名空间（可选）
+REGISTRY_NAMESPACE=wecom-ai
+
+# 镜像名称
+BACKEND_IMAGE_NAME=wecom-ai-backend
+ADMIN_IMAGE_NAME=wecom-ai-admin
+
+# 默认镜像标签
+DEFAULT_IMAGE_TAG=latest