[Feature] Remove the image pulling step from the installation process.

[linshenkx]

Is your feature request related to a problem? Please describe.

1. 目前的设计是一个一个节点轮流地拉镜像，更慢，且没有明显好处
2. 目前是通过ssh执行docker pull（ctr image pull）命令拉取镜像。本质上只是缓存在本地而已，如果imagePullPolicy是Always，实际上还是会进行拉取操作的。等于docker和k8s各拉取了一次
3. docker和k8s的镜像仓库认证是两套体系，比方说k8s拉取私有镜像，可以通过k8s配置完成认证，这个时候用docker命令拉取就徒增麻烦

Describe the solution you'd like 移除【镜像拉取】步骤.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Add any other context or screenshots about the feature request here.