failed to create new container: image `docker.io/docker/build-a-image:latest` created. Creating default container.
docker.iodockerbuild-a-imagelatest: Error parsing image `dockertest`. fatal: Unable to create new container image docker.iodockerbuild-a-imagelatest: Error parsing image `dockertest`.
You have to be in the same VPS as the Docker build server, otherwise Docker will not accept your image. We would also recommend using the latest version of Docker for the most recent version of Docker. If you have a more recent version, you can use a Docker build server that supports the latest Docker version.