DOCKER_HOST environment variable on windows
On Windows 10 with Docker for Windows, the Docker Engine API is available in these two locations:
npipe:////./pipe/docker_engine
http://localhost:2375
I recommend trying with the localhost one.
Details here: https://docs.docker.com/docker-for-windows/faqs/#/how-do-i-connect-to-the-remote-docker-engine-api
It seems the user which is running Maven goals doesn't have access to docker.sock . The error message is telling which options are there to resolve the problem.
No
<dockerHost>
or<machine>
given, no DOCKER_HOST environment variable, and no read/writable '/var/run/docker.sock'
Last option is the easiest one because it requires a file permission and it doesn't need to create any docker machine or set a DOCKER_HOST, On Linux you can change read/write permission of docker.sock with the following:
sudo chmod 776 /var/run/docker.sock
On windows go through this article : Microsoft article