Jenkins JNLP Agent Docker image
This image is based on https://github.com/jenkinsci/docker-jnlp-slave image and fixes permissions issues with volumes created by docker. The image also contains docker binary and able to mount /var/run/docker.sock to enable the slave to run docker commands on the slave. The image is based on alpine and installs also glibc to enable Oracle JDK installations. (see gliderlabs/docker-alpine#11)
The immage support running docker commands in slave in 2 different modes:
- By mounting the host's /var/run/docker.sock inside the slave.
- docker commands are running on the host's docker daemon.
- Containers and images built by the slave are not cleaned up.
- Cannot mount volumes from the slave's workspace - i.e hard to use docker-compose
- By using Docker Inside Docker - requires
privilegedcontainer and passingDIND=truevariable.- docker commands are running within the slave's docker daemon.
- Containers and images built by the slave are cleaned up directly after slave finishes the build.
- Ability to mount volumes from the slave's workspace - native usage of docker-compose
Environment Variables
| Name | Description |
|---|---|
DIND |
If true, then the slave will run docker inside docker - Requires privileged container |
For other environment variables, see https://github.com/jenkinsci/docker-jnlp-slave