docker pull gives invalid reference format - docker

Question

I am doing a very simple job of creating a registry in one vm pushing hello-world with my tag, mentioned first vm's ip:5000 as insecure registry in next vm and trying to pull from my first vm registry.
It is giving me error invalid reference format
don't understand what is wrong here, my commands are below
on first vm
docker pull hello-world
docker run -d -p 5000:5000 --name registry registry
docker tag hello-world localhost:5000/my-hello
docker push localhost:5000/my-hello
on second vm (used --engine-insecure-registry 192.168.99.100:5000 while creating)
docker pull 192.168.99.100:5000/my-hello
this gives me error
Note: I am able to curl to docker registry with below urls successfully
curl http://192.168.99.100:5000/v2/_catalog
{"repositories":["my-hello"]}
curl http://192.168.99.100:5000/v2/my-hello/manifests/latest
this gives me json response
Note: I am running all this behind proxy but I am able to pull from docker hub on both vms. Also in second vm when I do docker info, I get below result in the end
Insecure Registries:
192.168.99.100:5000
127.0.0.0/8

Answer 1

I did some workaround and was able to solve my issue, mentioning it as answer to my own question cos that might help others.
I did port forwarding in virtualbox from my host and used my host ip as registry server. This not only did the trick to solve my issue but also helped me accessing my registry from other systems.