Cant expose a Local Port to Docker container

Drone Support
#1

Hi,
I was trying to build a docker image locally using drone exec in windows.
Here is my .drone.yml file
kind: pipeline
name: default

clone:
  disable: true

steps:

  - name: docker_local_build
    image: docker
    privileged: true
    environment:
      DOCKER_HOST: "tcp://localhost:2375"
    commands:
      - docker build -t foo/bar .

While running I’m receiving this error.
Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?

I think the container is not exposed to the local port 2375. Is there any possible way to expose local ports to the container in .drone.yml.

#2

image: docker
ports: [2375]

I think it should work.
Ref: Expose ports from service containers

#3

Thanks for the update :slightly_smiling_face:.

But received the same error and while seeing container list using docker ps during build,
there is no exposed port details in it.

#4

The volume socket is not being mounted onto the docker image. Hence the docker image cannot connect detect the docker service on host machine.

Solution:

kind: pipeline
name: default

steps:
- name: docker_local_build
  image: docker
  privileged: true
  volumes:
      - name: mounted
        path: /var/run/docker.sock
  commands:
    - docker --version
    - ps uax
    - docker ps
    - docker build -t foo/bar .

volumes:
- name: mounted
  host:
    path: /var/run/docker.sock
1 Like
#5

Thanks, @Rewanth_Cool :heart_eyes: . It seems helpful.