Moving to LTS by default

Dockerfile

@@ -2,17 +2,22 @@ FROM ubuntu:14.04
 
 RUN apt-get update && apt-get install -y wget git curl
 RUN apt-get update && apt-get install -y --no-install-recommends openjdk-7-jdk
-RUN apt-get update && apt-get install -y maven ant
-RUN wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
-RUN echo deb http://pkg.jenkins-ci.org/debian binary/ >> /etc/apt/sources.list
+RUN apt-get update && apt-get install -y maven ant ruby rbenv make
+RUN echo "1.554.3" > .lts-version-number
+RUN wget -q -O - http://pkg.jenkins-ci.org/debian-stable/jenkins-ci.org.key | sudo apt-key add -
+RUN echo deb http://pkg.jenkins-ci.org/debian-stable binary/ >> /etc/apt/sources.list
 RUN apt-get update && apt-get install -y jenkins
 RUN mkdir -p /var/jenkins_home && chown -R jenkins /var/jenkins_home
 ADD init.groovy /tmp/WEB-INF/init.groovy
 RUN apt-get install -y zip && cd /tmp && zip -g /usr/share/jenkins/jenkins.war WEB-INF/init.groovy
 USER jenkins
 
-# VOLUME /var/jenkins_home
+# VOLUME /var/jenkins_home - bind this in via -v if you want to make this persistent.
 ENV JENKINS_HOME /var/jenkins_home
-EXPOSE 8080
-EXPOSE 50000
+
+# for main web interface:
+EXPOSE 8080 
+
+# will be used by attached slave agents:
+EXPOSE 50000 
 CMD ["/usr/bin/java",  "-jar",  "/usr/share/jenkins/jenkins.war"]

README.md

@@ -1,12 +1,13 @@
-# This is a WIP
+# Official Jenkins Docker image
 
-The Jenkins Continuous Integration and Continuous Delivery server. 
+The Jenkins Continuous Integration and Delivery server. 
 
-This is a fully functional Jenkins server. 
+This is a fully functional Jenkins server, based on the Long Term Support release
+http://jenkins-ci.org/
 
-Note you can run builds on the master (out of the box) buf if you want to attach build slave servers: make sure you map the port: ```-p 50000:50000```. 
 
-To run: 
+
+# Usage
 
 ```
 docker run -p 8080:8080 jenkins
@@ -28,5 +29,20 @@ First, ensure that /your/home is accessible by the jenkins user in container (je
 docker run -p 8080:8080 -v /your/home:/var/jenkins_home jenkins
 ```
 
+## Backing up data
+
+If you bind mount in a volume - you can simply back up that directory (which is jenkins_home) at any time. 
+
+If your volume is inside a container - you can use ```docker cp $ID:/var/jenkins_home``` command to extract the data. 
+
+# Attaching build executors 
+
+You can run builds on the master (out of the box) buf if you want to attach build slave servers: make sure you map the port: ```-p 50000:50000``` - which will be used when you connect a slave agent.
+
+
+# Upgrading
+
+All the data needed is in the /var/jenkins_home directory - so depending on how you manage that - depends on how you upgrade. Generally - you can copy it out - and then "docker pull" the image again - and you will have the latest LTS - you can then start up with -v pointing to that data (/var/jenkins_home) and everything will be as you left it. 
+