Automatically build images after Helm upgrade

[michaelsauter]

When the Helm release is deployed, the user still needs to manually build all images. This is cumbersome and feels wrong.

Maybe we can make use of https://helm.sh/docs/topics/charts_hooks/, to run a Job after the upgrade to automatically trigger all builds (only in OpenShift of course).

[michaelsauter]

The below works but there are some questions left:

apiVersion: batch/v1
kind: Job
metadata:
  name: ods-start-builds
  annotations:
    # Will this also trigger for the initial installation? Do we need to add "post-install"?
    "helm.sh/hook": post-upgrade
    "helm.sh/hook-weight": "1"
    "helm.sh/hook-delete-policy": hook-succeeded,hook-failed
spec:
  template:
    metadata:
      name: ods-start-builds
    spec:
      serviceAccountName: pipeline
      restartPolicy: Never
      containers:
      - name: post-upgrade-job
        # Which version to pick here?
        # Also which source should we pull from?
        image: "quay.io/openshift/origin-cli:4.10"
        command: ["/bin/sh","-c"]
        # How do we know which build configs are installed?
        # Should we wait for the builds to succeed? This would probably trigger timeouts ...
        args: ["oc start-build ods-buildah; oc start-build ods-finish; oc start-build ods-go-toolset; oc start-build ods-gradle-toolset; oc start-build ods-helm; oc start-build ods-node16-npm-toolset; oc start-build ods-pipeline-manager; oc start-build ods-python-toolset; oc start-build ods-sonar; oc start-build ods-start"]