Revert "Update to bitnami/moodle 4.4"

This reverts commit 5c0e9f9c.

docker-compose.yaml

 version: '2'
 services:
-  mariadb-cota:
-    container_name: moodledb-cota
+services:
+  mariadb-dtt:
+    container_name: moodledb-dtt
     image: docker.io/bitnami/mariadb:11.1
     environment:
       # ALLOW_EMPTY_PASSWORD is recommended only for development.
@@ -11,39 +12,36 @@ services:
       - MARIADB_CHARACTER_SET=utf8mb4
       - MARIADB_COLLATE=utf8mb4_unicode_ci
     volumes:
-      - 'mariadb_data_cota:/bitnami/mariadb'
-
-  moodle-cota:
-    container_name: moodle-cota
-    image: docker.io/bitnami/moodle:4.4
+      - 'mariadb_data_dtt:/bitnami/mariadb'
+  moodle-dtt:
+    container_name: moodle-dtt
+    image: docker.io/bitnami/moodle:4.3
     ports:
       - '81:8080'
       - '444:8443'
     environment:
-      - MOODLE_DATABASE_HOST=mariadb-cota
+      - MOODLE_DATABASE_HOST=mariadb-dtt
       - MOODLE_DATABASE_PORT_NUMBER=3306
       - MOODLE_DATABASE_USER=bn_moodle
       - MOODLE_DATABASE_NAME=bitnami_moodle
       # ALLOW_EMPTY_PASSWORD is recommended only for development.
       - ALLOW_EMPTY_PASSWORD=yes
     volumes:
-      - 'moodle_data_cota:/bitnami/moodle'
-      - 'moodledata_data_cota:/bitnami/moodledata'
+      - 'moodle_data_dtt:/bitnami/moodle'
+      - 'moodledata_data_dtt:/bitnami/moodledata'
     depends_on:
-      - mariadb-cota
-
+      - mariadb-dtt
   backend:
-    container_name: backendcomposecota
+    container_name: backendcomposedtt
     image: hftstuttgart/dta-backend:latest
     user: "${UID}:${GID}"
     volumes: 
       - /var/run/docker.sock:/var/run/docker.sock
       - '/tmp/dta-tests:/tmp/dta-tests'
-
 volumes:
-  mariadb_data_cota:
+  mariadb_data_dtt:
     driver: local
-  moodle_data_cota:
+  moodle_data_dtt:
     driver: local
-  moodledata_data_cota:
+  moodledata_data_dtt:
     driver: local