Add categories to readme-vars.yml

Author: quietsy

readme-vars.yml

@@ -2,7 +2,8 @@
 
 # project information
 project_name: socket-proxy
-project_description: The Socket Proxy is a security-enhanced proxy which allows you to apply access rules to the Docker socket, limiting the attack surface for containers such as watchtower or Traefik that need to use it.
+project_blurb: The Socket Proxy is a security-enhanced proxy which allows you to apply access rules to the Docker socket, limiting the attack surface for containers such as watchtower or Traefik that need to use it.
+project_categories: "Docker"
 full_custom_readme: |
   {% raw -%}
   [![linuxserver.io](https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/linuxserver_medium.png)](https://linuxserver.io)