[horde] Horde Container white screen

[redhat]

I tried to install  a old docker container with horde5.

cheewai/horde-docker  <https://registry.hub.docker.com/r/cheewai/horde-docker>

my composer file:
version: '3.0'
services:
   horde:
     image: cheewai/horde-docker
     container_name: ts_horde
     restart: unless-stopped

     ports:
       - "8081:80"

     volumes:
       - /etc/docker/horde/data:/etc/horde
       - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock:ro
     environment:
       - TZ=Europe/Amsterdam
       HORDE_TEST_DISABLE: "true"

       HTTP_X_FORWARDED_FOR: "172.21.0.41"
       HTTP_X_FORWARDED_PROTO: "https"

       DB_HOST: "172.22.0.1"
       DB_PORT: "3306"
       DB_NAME: "horde"
       DB_USER: "horde"
       DB_PASS: "horde"
       DB_PROTOCOL: "SOCKET"
       DB_DRIVER: "mysqli"

     security_opt:
       - apparmor:unconfined


the problem i get if i connect to the container wit 8081
i get i white screen with letters no gui the db connection works an the db is made.
Hope some one has experience with this to solve th eproblem

greetings Jasper


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