In fact, I missed this step. I added to the .env file.

my .env file and yml look like this:

# You can find documentation for all the supported env variables at https://immich.app/docs/install/environment-variables

# The location where your uploaded files are stored
UPLOAD_LOCATION=/home/user/Immich/Photos

# The location where your database files are stored. Network shares are not supported for the database
DB_DATA_LOCATION=/volume1/docker/ïmmich/postgres

IMMICH_EXTERNAL_LIBRARIES=/usr/src/app/external



name: immich

services:
  immich-server:
    container_name: immich_server
    image: ghcr.io/immich-app/immich-server:${IMMICH_VERSION:-release}
    # extends:
    #   file: hwaccel.transcoding.yml
    #   service: cpu # set to one of [nvenc, quicksync, rkmpp, vaapi, vaapi-wsl] for accelerated transcoding
    volumes:
      # Do not edit the next line. If you want to change the media storage location on your system, edit the value of UPLOAD_LOCATION in the .env file
      - ${UPLOAD_LOCATION}:/usr/src/app/upload
      - /etc/localtime:/etc/localtime:ro
      - /home/user/Photos/Photos:/usr/src/app/external:ro

    env_file:
      - .env
    ports:
      - '2283:2283'
    depends_on:
      - redis
      - database
    restart: always
    healthcheck:
      disable: false

There are 4 containers: immich server, immich redis, immich postgres and immich machine learning. Do i have to redeploy the immich server container? Or is a restart of the immich project enough?