Creating a S2I Tomcat builder image

Getting started

Creating the application image

The application image combines the builder image with your applications source code, which is served using whatever application is installed via the Dockerfile, compiled using the assemble script, and run using the run script. The following command will create the application image:

s2i build test/test-app s2i-tomcat s2i-tomcat-app

Running the application image

Running the application image is as simple as invoking the docker run command:

docker run -d -p 8080:8080 s2i-tomcat-app

The application, which consists of a simple static web page, should now be accessible at http://localhost:8080.

How to use in a openshift cluster

1. import s2i-tomcat image to openshift

oc import-image (you repository host)/s2i-tomcat:lastest -n openshift --confirm --insecure

2. edit image stream ,add annotation tags

oc edit is/tomcat-s2i -n openshift

tags:
    - annotations:
        description: >-
                  Build and run Tomcat applications on CentOS 7. For more information
                  about using this builder image, including OpenShift considerations,
                  see https://github.com/silentwu/s2i-tomcat.git.
        iconClass: icon-wildfly
        openshift.io/display-name: Tomcat 8.5.24
        openshift.io/provider-display-name: 'Rabbit blog, http://blog.xianshiyue.com'
        sampleRepo: 'https://gitee.com/silentwu/openshift-tomcat.git'
        supports: 'tomcat:8.5.24,jee,java'
        tags: 'builder,tomcat,java'
        version: 8.5.24