operator extensible pipeline credentials (-creds-image)

[objectiveous]

Background

Tekton currently has support for the provisioning of Build Tooling Configuration. For example, we have support for docker config (/builder/home/.docker/config.json) and git credentials (/builder/home/.ssh, /builder/home/..git-credentials, etc) but the provisioning mechanism is not extensible to Tekton operators (the human kind, not controllers).

By way of example, consider the use of gradle with an onprem artifact repository that requires credentials. In this scenario, gradle requires the existence of /builder/home/.gradle/gradle.properties:

artifactory_user=$USER
artifactory_password=$TOKEN
artifactory_contextUrl=https://artifacts.corp.com

Enhancement Request

Please consider making the provisioning of tooling configuration an extension point of tekton.

Proposed Design

TBD

[vdemeester]

This is also a bit related to #238 as it would be nice to have a extensiblitiy mecanisms for initializer too

/kind feature
/kind design

This issue relates to, and is perhaps superceded by, #2343 which is a more recent proposal for making credentials a declarable part of a Task's description.

[jlpettersson]

This can be done as by mounting the secret in a projected volume

Create a secret from your gradle.properties

kubectl create secret generic gradle-secret --from-file=gradle.properties

A "dummy-task", as an example how to access the gradle.properties file in a Task

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: gradle-dummy-task
spec:
  steps:
  - name: print-gradle-secret
    image: ubuntu
    script: cat /builder/home/.gradle/gradle.properties
    volumeMounts:
    - mountPath: /builder/home/.gradle
      name: gradle-properties
  volumes:
  - name: gradle-properties
    projected:
      sources:
      - secret:
          name: gradle-secret
          items:
          - key: gradle.properties
            path: gradle.properties

[tekton-robot]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
Rotten issues close after an additional 30d of inactivity.
If this issue is safe to close now please do so with /close.

/lifecycle rotten

Send feedback to tektoncd/plumbing.

[tekton-robot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
If this issue is safe to close now please do so with /close.

/lifecycle stale

Send feedback to tektoncd/plumbing.