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Last pushed: 2 months ago
Short Description
This builds Jenkins on an alpine based image. It downloads Jenkins (and docker) on runtime.
Full Description

Jenkins on Alpine image


This builds Jenkins on an alpine based image.
It downloads Jenkins (and docker) on runtime (to keep image size to a minimum).
This also allows for more custom options to be set.

To controll jenkins and docker versions use environment variables JENKINS_VERSION(=1.651.3) and DOCKER_VERSION(=1.12.1).
If you want to download weekly build or for instance 2.0 version, you can disrecard JENKINS_VERSION variable and use JENKINS_ALT_DOWNLOAD to set different download url (fex:

There is no DinD (Docker in Docker) in this image. To build docker images you need to mount local docker.sock to container (-v /var/run/docker.sock:/var/run/docker.sock). To stop from downloading docker all together set DOCKER_DOWNLOAD(=true) to false.

Jenkins starts by the user "abc". The ID and GID can be controlled by enviroment variable PUID and PGID. In addition you can set PAGID to prepend additionaly 1 group to the user (example 999 Docker group for docker.sock). The home directory is by default /home/abc. This can be changed with PHOME enviroment variable.

To change Java options on jenkins start use enviroment variable JAVA_OPTS.
To change Jenkins options on start use enviroment variable JENKINS_OPTS.

JENKINS_HOME is defailt /opt/jenkins_home. this enviroment variable can be changed.

All Enviroment variables and its defaults:
Variable Default Desc.
JENKINS_VERSION latest stable Sets what stable version to download
JENKINS_ALT_DOWNLOAD 0 To manually set download url
JENKINS_OPTS "--httpListenAddress= --httpPort=8080 -Djava.awt.headless=true" Startup options for jenkins
JENKINS_HOME "/opt/jenkins_home" Home directory for jenkins
JENKINS_WEB "/usr/share/jenkins" Destination to download war file to
JAVA_OPTS "" Startup options to Java when Jenkins runs
DOCKER_VERSION "17.03.1-ce" Version of Docker to download. Does not support 1.11.x version yet.
DOCKER_DOWNLOAD "true" whether or not do download Docker (to decrease startup time)
DOCKER_HOST "unix:///var/run/docker.sock" Docker host variable to change where docker client will connect. See docker doc for more info.
PUID "1000" To change UID of user to launch Jenkins
PGID "1000" To change GID of user to launch Jenkins
PAGID "" To append additional group (like docker group) to user to launch Jenkins
PHOME "/home/abc" To change home dir of user to launch Jenkins
docker run -d \
-e PUID=1001 \
-e PGID=1001 \
-e PAGID=999 \
-e PHOME=/opt/jenkins_home \
-e JENKINS_VERSION=1.642.4 \
-e DOCKER_VERSION=1.10.3 \
-e "JAVA_OPTS=-Xmx2048m -Duser.timezone=Europe/Oslo" \
-e "JENKINS_OPTS=--spdy --httpListenAddress= --httpPort=8080 -Djava.awt.headless=true" \
-v /some/dir/to/jenkins_conf:/opt/jenkins_home:rw \
-v /var/run/docker.sock:/var/run/docker.sock:ro \
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