How to use Docker with Self-hosted Linux Shell runner?

[Ievgen Koshevyi]

When i'm trying to start this pipeline

pipelines:
  branches:
    master:
      - step:
    name: Step 1
    runs-on:
      - self.hosted
      - test
      - linux.shell
    script:
      - docker version

i got thin result

"Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?"

I have Docker installed, docker.service and docker.socket is active on runner.

[Theodora Boudale · Accepted solution]

Hi @Ievgen Koshevyi and welcome to the community!

Docker has not been tested and is not supported for Linux Shell Runners. That being said, I think the issue is that we are setting the variable DOCKER_HOST to tcp://localhost:2375 which leads to issues.

In order to work around this, you can add the command export DOCKER_HOST="" in your script as follows:

pipelines:
  branches:
    master:
      - step:
          name: Step 1
          runs-on:
            - self.hosted
            - test
            - linux.shell
          script:
            - export DOCKER_HOST=""
            - docker version

Please feel free to let me know if that solves the issue and if you have any questions.

Kind regards,
Theodora

[Ievgen Koshevyi]

Yeah. It works. Thank you!