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Short Description
Jenkins Swarm Slave with Docker Cli
Full Description

Jenkins Slave Container with Docker

Deprecated: According to this article Docker-in-Docker for your CI or testing environment? Think twice. by Jérôme Petazzoni you will run into several problems when you integrate Docker into your CI-System with this image. I agree, because I ran into several performance issues using it.

Solution: Use my image that is reusing the socket of your Docker host: blacklabelops/swarm-dockerhost

Check this project on how to configure a swarm slave: blacklabelops/jenkins-swarm

Make It Short!

In short, you can use Docker CLI commands inside a Jenkins slave.

First start a master!

$ docker run -d -p 8090:8080 --name jenkins blacklabelops/jenkins

This will pull the my jenkins container ready with swarm plugin and ready-to-use!

Then start a Docker demon container!

$ docker run -d --privileged --name docker_demon docker:1.9.1-dind

The swarm-slave does not run a docker demon itself! We use the official Docker image to create one for all slaves.

Now start the build slave!

$ docker run -d \
    --link jenkins:jenkins \
    --link docker_demon:docker \
    blacklabelops/swarm-docker

CLI commands will be available.

Docker Login

The slave can be started and login in a remote repository. The default is the dockerhub registry.

With the environment variables:

  • DOCKER_REGISTRY_USER: Your account username for the registry. (mandatory)
  • DOCKER_REGISTRY_EMAIL: Your account email for the registry. (mandatory)
  • DOCKER_REGISTRY_PASSWORD: Your account password for the registry. (mandatory)

Example:

$ docker run -d \
    --link jenkins:jenkins \
    --link docker_demon:docker \
    -e "DOCKER_REGISTRY_USER=**Your_Account_Username**" \
    -e "DOCKER_REGISTRY_EMAIL=**Your_Account_Email**" \
    -e "DOCKER_REGISTRY_PASSWORD=**Your_Account_Password**" \
    blacklabelops/swarm-docker

Will login the user to Dockerhub and save the credentials locally for repository pulls and pushes.

Changing the Docker registry

The default for this container is dockerhub.io. If you want to use another remote repository, e.g. quay.io then Your_Account_Email can specify the repository with the environment variable DOCKER_REGISTRY.

Example:

$ docker run -d \
    --link jenkins:jenkins \
    --link docker_demon:docker \
    -e "DOCKER_REGISTRY=quay.io"
    -e "DOCKER_REGISTRY_USER=**Your_Account_Username**" \
    -e "DOCKER_REGISTRY_EMAIL=**Your_Account_Email**" \
    -e "DOCKER_REGISTRY_PASSWORD=**Your_Account_Password**" \
    blacklabelops/swarm-docker

Will login to quay.io with the specified credentials.

References

Docker Pull Command
Owner
blacklabelops
Source Repository

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