How install application to Controller Jenkins in K8s?

Hello! I use Jenkins in k8s installed by helm.
How install application to Controller Jenkins in K8s?
For example, jq.
Thanks!

This code don`t work

jq:
  installations:
    - name: "jq"
      executable: "INSTALLATION/bin/jq"
      properties:
      - installSource:
          installers:
          - command:
              command: "https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64 -O INSTALLATION/bin/jq"

Hi there,

“it doesn’t work” is always hard to remote debug. Try to always include these 3 things.

  1. what did you try? (Code samples, command lines, screenshots, videos, etc)
  2. what did happen? (Error messages, description, outputs, stuff)
  3. what did you expect to happen?

Otherwise, it’s hard for us to get into your context and you’ll have to have someone who is exactly knowledgeable come along.