Plugin not being installed

Product Support Self-hosting
5

Unfortunately not appearing in admin.

This is the app.yml:

## The Docker container is stateless; all data is stored in /shared
volumes:
  - volume:
      host: /var/discourse/shared/standalone
      guest: /shared
  - volume:
      host: /var/discourse/shared/standalone/log/var-log
      guest: /var/log

## Plugins go here
      ## see https://meta.discourse.org/t/19157 for details
      hooks:
        after_code:
          - exec:
              cd: $home/plugins
              cmd:
                - git clone https://github.com/discourse/docker_manager.git
                - git clone https://github.com/discourse/discourse-spoiler-alert.git
                - git clone https://github.com/discourse/discourse-animated-avatars.git
                - git clone https://github.com/discourse/discourse-whos-online.git
                - git clone https://github.com/discourse/discourse-data-explorer.git
                - git clone https://github.com/discourse/discourse-bbcode.git
                - git clone https://github.com/discourse/discourse-signatures.git
                - git clone https://github.com/discourse/discourse-reactions.git
                - git clone https://github.com/paviliondev/discourse-legal-tools.git
                - git clone https://github.com/theCrius/discourse-ngi-emojis.git
                
## Any custom commands to run after building
run:
  - exec: echo "Beginning of custom commands"
  ## If you want to set the 'From' email address for your first registration, uncomment and change:
  ## After getting the first signup email, re-comment the line. It only needs to run once.
  #- exec: rails r "SiteSetting.notification_email='info@unconfigured.discourse.org'"
  - exec: echo "End of custom commands"