Allow add custom plugin for docs using helm chart

[vinibsi]

We're using docs documentserver deployed by Helm Chart inside our on-primeses kubernetes cluster and all things are working great. A feature was requested and we created a custom plugin. In our local dev machine, using docker version, the custom plugin was added manually, tested and approved. When we started to deploy in the staging server, we needed to extend the docker image and copy the plugin folder.

Why not create a ConfigMap with binaryData pointing to plugin.tar.gz, and inside a sidecar in docserver, with an extra volume we extract plugin inside sdkjs-plugins?

My idea

ConfigMap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: custom-plugin-tar-gz
  namespace: onlyoffice
binaryData:
  custom-plugin.tar.gz: >-
    base64 encoded

Docs helm chart Values.yaml:

docservice:
  initContainers:
      - name: deploy-custom-plugin
      image: busybox:1.37.0
      command: ['sh', '-c', 'tar -zxvf /var/www/onlyoffice/custom-plugins/custom-plugin.tar.gz -C /var/www/onlyoffice/documentserver/sdkjs-plugins/']
      volumeMounts:
        - name: custom-plugins
          mountPath: /var/www/onlyoffice/custom-plugins
 volumes:
  - name:   custom-plugins
     configMap:
       - name: custom-plugin-tar-gz

[igwyd]

Hello @vinibsi, thanks for the enhancement suggestion, this is an issue #71492