How to build from Origin's integrated registry? - kubernetes

Question

I'm trying to learn Openshift/Origin/Kubernetes, so am stuck on one of many newbie hiccups.
If I build an image using this yml file:
apiVersion: v1
items:
- apiVersion: v1
kind: ImageStream
metadata:
annotations:
openshift.io/generated-by: OpenShiftNewApp
creationTimestamp: null
labels:
app: myapp-dev
name: myapp-dev
spec: {}
status:
dockerImageRepository: ""
- apiVersion: v1
kind: BuildConfig
metadata:
annotations:
openshift.io/generated-by: OpenShiftNewApp
creationTimestamp: null
labels:
app: myapp-dev
name: myapp-dev
spec:
output:
to:
kind: ImageStreamTag
name: myapp-dev:latest
postCommit: {}
resources: {}
source:
git:
ref: master
uri: git#git.host:myproject/myapp.git
secrets: []
sourceSecret:
name: "deploykey"
type: Git
strategy:
dockerStrategy:
dockerfilePath: Dockerfile
type: Docker
triggers:
- type: ConfigChange
- imageChange: {}
type: ImageChange
status:
lastVersion: 0
kind: List
metadata: {}
And I have other Dockerfiles that I want to use the output image from the previous build, how do I reference the integrated registry within the Dockerfile? Right now, I'm just watching the build log and using the IP and port listed in the logs in the Dockerfile's FROM directive.
So the build logs show:
Successfully built 40ff8724d4dd
I1017 17:32:24.330274 1 docker.go:93] Pushing image 123.123.123.123:5000/myproject/myapp-dev:latest ...
So I used this in the Dockerfile:
FROM 123.123.123.123:5000/myproject/myapp-dev:latest
Any guidance you can provide will be awesome.
I would like to do something like:
FROM integrated.registry/myproject/myapp-dev:latest
Thank you for your time!

Answer 1

The build config object lets you override the FROM. If you look at the build config created by oc new-build or new-app you'll see the field spec.strategy.dockerStrategy.from which can point to any docker image you want. To point to an image stream use "kind" as "ImageStreamTag", set "name" to "myapp-dev:latest"
If you're building outside of OpenShift and have given your registry a public DNS name you can simply set the FROM to registry/project/name:tag