Docker repository name for nexus should be parameterized

[ribeaud]

Hi,
ImageStream definition looks as following (snippet):

...
spec:
    tags:
    - from:
        kind: DockerImage
        name: docker.io/sonatype/nexus3:${NEXUS_VERSION}
      name: ${NEXUS_VERSION}
...

docker.io/sonatype/nexus3 should be specified via a parameter as one might want to use its own image.

Another point to consider (applying to my case), it could happen that one already defined an ImageStream in the internal OpenShift Docker registry. And this is one which will be used by the deployment:

...
triggers:
    - type: ConfigChange
    - imageChangeParams:
        automatic: true
        containerNames:
        - ${SERVICE_NAME}
        from:
          kind: ImageStreamTag
          name: ${SERVICE_NAME}:${NEXUS_VERSION}
      type: ImageChange
...

How could this fit in with the template? In my case, I've removed the section ImageStream from the template.

What do you think?

Kind regards,

christian