Fix inaccurate docs about TriggerTemplate

[ncskier]

Changes

• Fix inaccurate main README which said

  TriggerTemplates can create any Kubernetes resource.

• Make it more visible that TriggerTemplates can only create Tekton resources.

Issue #476 was raised because our docs have inaccurate information about what K8s resources TriggerTemplates can create.

/cc @disposab1e
/cc @dibyom

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[tekton-robot]

@ncskier: GitHub didn't allow me to request PR reviews from the following users: disposab1e.

Note that only tektoncd members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

Changes

Make it more visible that TriggerTemplates can only create Tekton resources.

Issue #476 was raised because our docs did not properly highlight that TriggerTemplates can only create Tekton resources at the moment.

/cc @disposab1e
/cc @dibyom

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes tests (if functionality changed/added)
• Includes docs (if user facing)
• Commit messages follow commit message best practices

See the contribution guide for more details.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ncskier]

/test pull-tekton-triggers-build-tests

[disposab1e]

Perhaps you mights change in the /README.md too?

Using tektoncd/triggers in conjunction with tektoncd/pipeline enables you to easily create full-fledged CI/CD systems where the execution is defined entirely through Kubernetes resources. This repo draws inspiration from Tekton, but can used stand alone since TriggerTemplates can create any Kubernetes resource.

[ncskier]

This repo draws inspiration from Tekton, but can used stand alone since TriggerTemplates can create any Kubernetes resource.

Thanks @disposab1e, the README was not adequately updated when Triggers disallowed the creation of any K8s resource 🤦‍♂

I just updated my PR to fix this.

[ncskier]

/test pull-tekton-triggers-build-tests

[ncskier]

/test pull-tekton-triggers-build-tests

[dibyom]

/lgtm

[tekton-robot]

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