How I can upgrade docker version used for pipelines

[Javier Toledo]

The pipelines currently uses  Version: 17.12.0-ce which has a bug that doesn't allow having a Dockerfile outside of the build context. I would like to know if there's a way to upgrade the docker used for this. The thing here is that I wouldn't like to spend build minutes on upgrading docker.

[Javier Toledo]

I couldn't find a way to upgrade the docker daemon. However, for the specific issue regarding the dockerfile outside the build context, I used a Docker in Docker image and exposed the daemon service in this way:

- step:
    image: docker:18.06.1
    deployment: production
    services:
      - docker

 Not as good as being able to select the docker version to use for the pipelines but works good enough for my use case.