客户端A：

vi Dockerfile

FROM scratch
ADD ./obsidian167 /obsidian167

FROM alpine
ADD https://a.com/b.zip /obsidian167/b.zip

docker build --tag xxx:version1 .

docker tag xxx:version1 registry.cn-shanghai.aliyuncs.com/name/xxx:version1

docker login registry.cn-shanghai.aliyuncs.com

docker push registry.cn-shanghai.aliyuncs.com/name/xxx:version1

docker system prune --volumes -af

客户端B：

docker login registry.cn-shanghai.aliyuncs.com

docker pull registry.cn-shanghai.aliyuncs.com/name/xxx:version1

docker container create --name containerName registry.cn-shanghai.aliyuncs.com/name/xxx:version1 /bin/bash

docker cp containerName:/obsidian167 ./obsidian167

可以利用的云平台：

AWS CloudShell 或 抢占式实例 或 lightsail

阿里云 容器镜像服务 个人版

腾讯云 容器镜像服务 个人版