On-prem Pipeline Runner - Access docker from container

[Nicklas Wallgren]

How do we access the docker daemon from inside a container running via the on-prem Bitbucket Pipeline Runner. The pipeline runner is hosted in our k8s cluster, and the manifest file looks like the one found here, https://support.atlassian.com/bitbucket-cloud/docs/pipelines-runners-frequently-asked-questions/

We have tried with

- step:
    name: Test
    runs-on:
      - 'self.hosted'
    image: gcr.io/k8s-skaffold/skaffold:v1.20.0
    script:
      - DOCKER_HOST=tcp://localhost:2375 DOCKER_DRIVER=overlay2 DOCKER_TLS_CERTDIR="" docker infoand

- step:
    name: Test
    runs-on:
      - 'self.hosted'
    image: gcr.io/k8s-skaffold/skaffold:v1.20.0
    script:
      - DOCKER_HOST=tcp://docker:2375 DOCKER_DRIVER=overlay2 DOCKER_TLS_CERTDIR="" docker info

 
Error message

DOCKER_HOST=tcp://localhost:2375 DOCKER_DRIVER=overlay2 DOCKER_TLS_CERTDIR="" docker info

Client:

Debug Mode: false

errors pretty printing info

Server:

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