Am I trying to connect to a TLS-enabled daemon without TLS?

Question

I\'m trying to learn about Docker, but I keep getting cryptic (to me) error messages.

Possibly the simplest example of this is trying to print the version of Docker

Answer 1

For me the following steps worked:

1. I noticed that running docker run hello-world fails with this socked error as in the question, but running sudo docker run hello-world worked.
2. I added my current user to the docker group, sudo adduser user docker. Then you must restart your machine or use su - user (check using groups command if are in the docker group).

After that, hello-world started to work.

My answer is based on How can I use docker without sudo? which explains what go wrong.

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