A simple docker compose wrapper for imapsync that runs locally saves an easily accessible log file

docker-compose.yml

services:
  imapsync:
    image: gilleslamiral/imapsync:latest # Or another imapsync image like jauderho/imapsync
    container_name: imapsync_runner
    volumes:
      - ./config:/config # Optional: Mount a directory for configuration files or scripts
      - ./var/tmp/logs:/var/tmp/logs
    command: >
      imapsync
        --host1 mail.olddomain.com    --user1 oldme@olddomain.com --password1 'xxxxx'
        --host2 mail.newdomain.com    --user2 newme@newdomain.com --password2 'yyyyy'
        --ssl1 --ssl2
        --log
        --logdir /var/tmp
        --logfile my_migration.log
        --dry
       
    # --ssl1 --ssl2 # Use SSL for secure connections
    # --delete2 # Optional: Delete messages on host2 that are not on host1
    # --exclude 'Junk' # Optional: Exclude specific folders
    # --dry # Optional: Perform a dry run without actual synchronization

# run with `docker compose up`

Because /var/tmp is owned by "nobody" in the base image, it's very picky about the directories you mount, thus the weird way I had to do the bind mounts. You have to run it at least once as shown, then CHANGE --logdir to /var/tmp/logs (else it won't save the directory). At that point you might consider a dockerfile to wrap the original docker image with a sane log directory instead of the one also used by the pid!