I have this error in my WSL:
~$ docker pull containers.intersystems.com/intersystems/webgateway:2021.1.0.205.0
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

I am so sorry, that's because I haven't run Docker yet

thank you a lot, it is succeeded and I would like to send you the message:

WARNING! Using --password via the CLI is insecure. Use --password-stdin.
WARNING! Your password will be stored unencrypted in /root/snap/docker/471/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-...

Login Succeeded

But I have another Problem as I have done: docker-compose build:

Step 1/16 : FROM containers.intersystems.com/intersystems/webgateway:2020.2.0.211.0
ERROR: Service 'webserver' failed to build : manifest for containers.intersystems.com/intersystems/webgateway:2020.2.0.211.0 not found: manifest unknown: The named manifest is not known to the registry.
 

Error response from daemon: Get https://containers.intersystems.com/v2/: unauthorized: BAD_CREDENTIAL