tekton mr comment listener

gistfile1.txt

apiVersion: triggers.tekton.dev/v1alpha1
kind: TriggerBinding
metadata:
  name: gitlab-review-comment-on-mergerequest-custom
spec:
  params:
    - name: mergereq-url
      value: $(body.merge_request.url)
    - name: comment-description
      value: $(body.object_attributes.description)
    - name: comment-url
      value: $(body.object_attributes.url)
    - name: mr-owner
      value: $(body.user.name)
    - name: mergereq-project-id
      value: $(body.merge_request.target_project_id)
    - name: mergereq-id
      value: $(body.merge_request.iid)
    - name: mergereq-sha
      value: $(body.merge_request.last_commit.id)
---
apiVersion: triggers.tekton.dev/v1alpha1
kind: EventListener
metadata:
  name: notebook-event-listener
spec:
  namespaceSelector: {}
  podTemplate: {}
  resources: {}
  serviceAccountName: pipeline
  triggers:
    - bindings:
        - kind: TriggerBinding
          ref: gitlab-review-comment-on-mergerequest-custom
      interceptors:
        - cel:
            filter: 'body.object_attributes.note.matches(''^/build($| [^ ]*[ ]*$)'')'
      template:
        ref: {your template}