Docker Version 29.0.0

[nicholas-fedor]

If you're here, then you likely just ran into an issue related to Docker deciding to enforce a minimum API version of 1.44 or later.

Related Containrrr GitHub Issue: containrrr#2122

You can read Docker's release notes here.
You can also view Docker's deprecation schedule here.

Using the original Containrrr version of Watchtower will likely result in the following message:

Error response from daemon: client version 1.25 is too old. Minimum supported API version is 1.44, please upgrade your client to a newer version

This is resolved by specifying the Docker API version (Containrrr Documentation).

Example CLI deployment:

docker run \
        -v /var/run/docker.sock:/var/run/docker.sock \
        -e DOCKER_API_VERSION=v1.52 \
        containrrr/watchtower:latest

Fortunately, this issue of negotiating the constantly-evolving Docker API is not new and should be expected with virtualization technology. As such, I opted to integrate Docker's version auto-negotiation functionality directly into Watchtower to help alleviate this issue. At the same time, I have also retained pre-existing manual override from the previous maintainer.

Unfortunately, there are certain implementations of Docker that are not well-maintained and are at a greater risk of facing deprecation issues in the future. Hopefully, this latest event serves to motivate people to update to the latest version of Docker.

When it comes to this fork of Watchtower, the primary focus is supporting the most updated version of Docker. While some legacy support has been attempted, such as for Synology devices, that is largely dependent upon Docker's own legacy support. As of release v1.12.2, I have tested basic container updates using as old as Docker API v1.40 without issues; however, this does not preclude the potential for edge cases and other oddities.

tl;dr - Docker is still very active and any software that interacts with its API must be actively maintained.

[stanthewizzard]

Using you fork
I still got that message :/
Autonegociation is by default ?

Thanks
PS: 130 mail per day for that

[stanthewizzard]

and did this on /etc/systemd/system/docker.service.d/override.conf

[Service]
ExecStart=
ExecStart=/usr/bin/dockerd
Environment=DOCKER_MIN_API_VERSION=1.24

[stanthewizzard]

Maybe the compose ?

services:
  watchtower:
    image:  ghcr.io/nicholas-fedor/watchtower:latest
    container_name: watchtower20s
    restart: unless-stopped
    environment:
      TZ: Europe/Paris
      WATCHTOWER_INCLUDE_STOPPED: "true"
      WATCHTOWER_CLEANUP: "true"
      WATCHTOWER_REMOVE_VOLUMES: "true"
      WATCHTOWER_INCLUDE_RESTARTING: "true"
      WATCHTOWER_HTTP_API_TOKEN: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
      WATCHTOWER_WARN_ON_HEAD_FAILURE: never
      WATCHTOWER_POLL_INTERVAL: "43200"
      WATCHTOWER_LIFECYCLE_HOOKS: "true"
#      DOCKER_API_VERSION: "Autonegotiated"
      WATCHTOWER_NOTIFICATIONS: email
      WATCHTOWER_NOTIFICATION_EMAIL_FROM: xxxxxxxxxxxx
      WATCHTOWER_NOTIFICATION_EMAIL_TO: xxxxxxxxxxxx
      WATCHTOWER_NOTIFICATIONS_HOSTNAME: Docker 20 Service
      WATCHTOWER_NOTIFICATION_EMAIL_SERVER: in-v3.mailjet.com
      WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT: 587
      WATCHTOWER_NOTIFICATION_EMAIL_SERVER_USER: xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
      WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PASSWORD: xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
      WATCHTOWER_NOTIFICATION_EMAIL_DELAY: 2

    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - /root/.docker/config.json:/config.json
    networks:
      - watchtower
    labels:
      - autoheal=true
networks:
  watchtower:
    external: false

[nicholas-fedor]

Getting rid of the override might be a good place to start.

[nicholas-fedor]

Remove - DOCKER_API_VERSION: "Autonegotiated"

[stanthewizzard]

removed
Not sure but restarting watchtower looks good