Can I use volumes in Drone Cloud in order to map /var/run/docker.sock?

Drone Support
1

I need to know the docker image id in the registry to include it in the Heroku API request in order to perform a release. To do that I use docker inspect tag --format={{.Id}} inside alpine image and install docker-cli to that. In order docker command to work I need a volume mapping from host /var/run/docker.sock to container /var/run/docker.sock.

steps:
  - name: release
    image: alpine
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands: [...]

volumes:
  - name: dockersock
    host:
      path: /var/run/docker.sock

But this causes build error in cloud.drone.com with the message “default : error”.

What I do wrong? Maybe some alternative solution will be better?

2

pipeline cannot mount volumes by default, for security reasons. we therefore do not allow volumes to be mounted at drone cloud, however, you always have the option to self-host Drone on your own infrastructure.

1 Like
3

Hi @karatach1998, I had a similar case and worked around it without a volume mount, which I believe is still possible on Drone Cloud. Example below:

kind: pipeline
type: kubernetes
name: default

steps:
- name: release
  image: docker:dind
  environment:
    DOCKER_HOST: tcp://docker:2375
  commands:
  # wait for docker service to be up before running docker build
  - n=0; while [ "$n" -lt 60 ] && [ ! docker stats --no-stream ]; do n=$(( n + 1 )); sleep 1; done
  - ...

services:
- name: docker
  image: docker:dind
  environment:
    DOCKER_TLS_CERTDIR: ""