title: How to use custom themes on Keycloak Operator (v13.0.0)?
body: <p>I was installing Keycloak using <a href="https://operatorhub.io/operator/keycloak-operator" rel="nofollow noreferrer">Operator</a> (version 13.0.0). The updated code has theme related stuff <a href="https://github.com/keycloak/keycloak-operator" rel="nofollow noreferrer">github repository</a> and supports custom theme integration quite well. All we need an URL where the custom <code>theme</code> is located. I tried it and worked flawlessly.</p>
  <p>However, what if we have themes in some local directory, not on some public URL. How do we suppose to upload the <code>theme</code> in the Keycloak then?</p>
  <p>I've tried using the File URL and file paths as well but didn't work for me.</p>
  <p>The <code>Keycloak.yaml</code></p>
  <pre><code>apiVersion: keycloak.org/v1alpha1
  kind: Keycloak
  metadata:
    name: keycloak-test
    labels:
      app: keycloak-test
  spec:
    instances: 1
    extensions:
      - https://SOME-PUBLIC-URL/keycloak-themes.jar                    
    externalAccess:
      enabled: False
    podDisruptionBudget:
      enabled: True
  </code></pre>