Colabora + Nextcloud -> Image -> Insert Image

I don’t think it helps I share my config… app config looks like expanded config from Nextcloud docker-compose setup with notify_push (2024) and CODE is pretty unchanged all the time (I don’t remember any changes beside version for long time already).

docker compose config:
services:
  app:
    depends_on:
      db:
        condition: service_healthy
        required: true
      redis:
        condition: service_healthy
        required: true
    environment:
      COLLABORA_FQDN: collabora.mydomain.tld
      NEXTCLOUD_ADMIN_PASSWORD_FILE: /run/secrets/nextcloud_admin_password
      NEXTCLOUD_ADMIN_USER_FILE: /run/secrets/nextcloud_admin_user
      NEXTCLOUD_FQDN: dev-nc.mydomain.tld
      NEXTCLOUD_TRUSTED_DOMAINS: dev-nc.mydomain.tld
      OVERWRITEHOST: dev-nc.mydomain.tld
      OVERWRITEPROTOCOL: https
      PHP_MEMORY_LIMIT: 768M
      PHP_UPLOAD_LIMIT: 1G
      POSTGRES_DB_FILE: /run/secrets/postgres_db
      POSTGRES_HOST: db
      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
      POSTGRES_USER_FILE: /run/secrets/postgres_user
      REDIS_HOST: redis
      TRUSTED_PROXIES: 172.16.0.0/12 192.168.0.0/16 10.0.0.0/8 fc00::/7 fe80::/10 2001:db8::/32
      overwrite.cli.url: https://dev-nc.mydomain.tld
    expose:
      - "80"
    image: nextcloud:29
    labels:
      traefik.docker.network: proxy
      traefik.enable: "true"
      traefik.http.routers.dev-nc.entrypoints: web-secure
      traefik.http.routers.dev-nc.middlewares: secHeaders3@file,nextcloud-redirect@file
      traefik.http.routers.dev-nc.priority: "1"
      traefik.http.routers.dev-nc.rule: Host(`dev-nc.mydomain.tld`)
      traefik.http.routers.dev-nc.tls: "true"
      traefik.http.routers.dev-nc.tls.certresolver: letsencryptresolver
      traefik.http.services.dev-nc.loadbalancer.server.port: "80"
    networks:
      default: null
      proxy: null
    restart: unless-stopped
    secrets:
      - source: postgres_db
        target: /run/secrets/postgres_db
      - source: postgres_password
        target: /run/secrets/postgres_password
      - source: postgres_user
        target: /run/secrets/postgres_user
      - source: nextcloud_admin_user
        target: /run/secrets/nextcloud_admin_user
      - source: nextcloud_admin_password
        target: /run/secrets/nextcloud_admin_password
    user: 1010:1010
    volumes:
      - type: bind
        source: ./dev-nc/app
        target: /var/www/html
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/config
        target: /var/www/html/config
        bind:
          create_host_path: true
      - type: bind
        source: /data/dev-nc/files
        target: /var/www/html/data
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/remoteip.conf
        target: /etc/apache2/conf-enabled/remoteip.conf
        read_only: true
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/redis-session.ini
        target: /usr/local/etc/php/conf.d/redis-session.ini
        bind:
          create_host_path: true
  cron:
    depends_on:
      app:
        condition: service_started
        required: true
    entrypoint:
      - /cron.sh
    environment:
      COLLABORA_FQDN: collabora.mydomain.tld
      NEXTCLOUD_ADMIN_PASSWORD_FILE: /run/secrets/nextcloud_admin_password
      NEXTCLOUD_ADMIN_USER_FILE: /run/secrets/nextcloud_admin_user
      NEXTCLOUD_FQDN: dev-nc.mydomain.tld
      NEXTCLOUD_TRUSTED_DOMAINS: dev-nc.mydomain.tld
      OVERWRITEHOST: dev-nc.mydomain.tld
      OVERWRITEPROTOCOL: https
      PHP_MEMORY_LIMIT: 768M
      PHP_UPLOAD_LIMIT: 1G
      POSTGRES_DB_FILE: /run/secrets/postgres_db
      POSTGRES_HOST: db
      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
      POSTGRES_USER_FILE: /run/secrets/postgres_user
      REDIS_HOST: redis
      TRUSTED_PROXIES: 172.16.0.0/12 192.168.0.0/16 10.0.0.0/8 fc00::/7 fe80::/10 2001:db8::/32
      UID: "1010"
      overwrite.cli.url: https://dev-nc.mydomain.tld
    image: nextcloud:29
    networks:
      default: null
    restart: unless-stopped
    volumes:
      - type: bind
        source: ./dev-nc/app
        target: /var/www/html
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/config
        target: /var/www/html/config
        bind:
          create_host_path: true
      - type: bind
        source: /data/dev-nc/files
        target: /var/www/html/data
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/remoteip.conf
        target: /etc/apache2/conf-enabled/remoteip.conf
        read_only: true
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/redis-session.ini
        target: /usr/local/etc/php/conf.d/redis-session.ini
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/cron.sh
        target: /cron.sh
        bind:
          create_host_path: true
  db:
    environment:
      POSTGRES_DB_FILE: /run/secrets/postgres_db
      POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
      POSTGRES_USER_FILE: /run/secrets/postgres_user
    healthcheck:
      test:
        - CMD-SHELL
        - pg_isready -d `cat $$POSTGRES_DB_FILE` -U `cat $$POSTGRES_USER_FILE`
      timeout: 5s
      interval: 30s
      retries: 3
      start_period: 15s
    image: postgres:15
    networks:
      default: null
    restart: unless-stopped
    secrets:
      - source: postgres_db
        target: /run/secrets/postgres_db
      - source: postgres_password
        target: /run/secrets/postgres_password
      - source: postgres_user
        target: /run/secrets/postgres_user
    user: 1010:1010
    volumes:
      - type: bind
        source: ./dev-nc/db
        target: /var/lib/postgresql/data
        bind:
          create_host_path: true
      - type: bind
        source: /etc/passwd
        target: /etc/passwd
        read_only: true
        bind:
          create_host_path: true
      - type: bind
        source: /data/dev-nc/db-backup
        target: /mnt/db-backup
        bind:
          create_host_path: true
  imaginary:
    cap_add:
      - SYS_NICE
    depends_on:
      app:
        condition: service_started
        required: true
    expose:
      - "9000"
    image: nextcloud/aio-imaginary:latest
    networks:
      default: null
    restart: unless-stopped
    tmpfs:
      - /tmp
    user: 1010:1010
  notify_push:
    depends_on:
      app:
        condition: service_started
        required: true
    entrypoint:
      - /var/www/html/custom_apps/notify_push/bin/x86_64/notify_push
      - /var/www/html/config/config.php
    environment:
      PORT: "7867"
    image: nextcloud:29
    labels:
      traefik.docker.network: proxy
      traefik.enable: "true"
      traefik.http.routers.dev-nc_push.entryPoints: web-secure
      traefik.http.routers.dev-nc_push.middlewares: nextcloud_striprefix_push@file
      traefik.http.routers.dev-nc_push.priority: "2"
      traefik.http.routers.dev-nc_push.rule: Host(`dev-nc.mydomain.tld`) && PathPrefix(`/push`)
      traefik.http.routers.dev-nc_push.tls.certresolver: letsencryptresolver
      traefik.http.services.dev-nc_push.loadbalancer.server.port: "7867"
    networks:
      default: null
      proxy: null
    restart: unless-stopped
    user: 1010:1010
    volumes:
      - type: bind
        source: ./dev-nc/app
        target: /var/www/html
        bind:
          create_host_path: true
      - type: bind
        source: ./dev-nc/config
        target: /var/www/html/config
        read_only: true
        bind:
          create_host_path: true
  redis:
    healthcheck:
      test:
        - CMD-SHELL
        - redis-cli ping | grep PONG
      timeout: 3s
      interval: 30s
      retries: 3
      start_period: 10s
    image: redis:bookworm
    networks:
      default: null
    restart: unless-stopped
	
  collabora:
    cap_add:
      - MKNOD
    container_name: collabora
    environment:
      VIRTUAL_HOST: collabora.mydomain.tld
      VIRTUAL_PORT: "9980"
      VIRTUAL_PROTO: http
      aliasgroup1: https://nc.mydomain.tld:443
      aliasgroup2: https://dev-nc.mydomain.tld:443
      aliasgroup3: https://test-nc.mydomain.tld:443
      dictionaries: de_DE en_US es_ES ru
      extra_params: --o:ssl.enable=false --o:ssl.termination=true --o:user_interface.mode=compact --o:remote_font_config.url=https://dev-nc.mydomain.tld:443/apps/richdocuments/settings/fonts.json --o:logging.level=warning
      password: <<redacted>>
      username: redis
    expose:
      - "9980"
    image: collabora/code:24.04.2.1.1
    labels:
      traefik.docker.network: proxy
      traefik.enable: "true"
      traefik.http.routers.collabora.entrypoints: web-secure
      traefik.http.routers.collabora.middlewares: secHeaders3@file
      traefik.http.routers.collabora.rule: Host(`collabora.mydomain.tld`)
      traefik.http.routers.collabora.tls: "true"
      traefik.http.routers.collabora.tls.certresolver: letsencryptresolver
      traefik.http.services.collabora.loadbalancer.server.port: "9980"
      traefik.passHostHeader: "true"
    networks:
      proxy: null
    restart: unless-stopped
    tty: true
    volumes:
      - type: bind
        source: /etc/timezone
        target: /etc/timezone
        read_only: true
        bind:
          create_host_path: true
      - type: bind
        source: /etc/localtime
        target: /etc/localtime
        read_only: true
        bind:
          create_host_path: true
networks:
  default:
    name: infra_default
  proxy:
    name: proxy
    external: true
	
secrets:
  nextcloud_admin_password:
    name: dev-nc_nextcloud_admin_password
    file: ./dev-nc/secrets/nextcloud_admin_password
  nextcloud_admin_user:
    name: dev-nc_nextcloud_admin_user
    file: ./dev-nc/secrets/nextcloud_admin_user
  postgres_db:
    name: dev-nc_postgres_db
    file: ./dev-nc/secrets/postgres_db
  postgres_password:
    name: dev-nc_postgres_password
    file: ./dev-nc/secrets/postgres_password
  postgres_user:
    name: dev-nc_postgres_user
    file: ./dev-nc/secrets/postgres_user	

as you see I tested with collabora/code:24.04.2.1.1 as well and it works.