Whatch Tower

Watchtower is a Docker container management tool that automates the process of monitoring and updating running Docker containers. It is an open-source project that helps users keep their Docker containers up to date with the latest software versions.

Watchtower can monitor all running containers on a Docker host and update them to the latest available version of the image they were created from. This allows users to automatically keep their containers up to date with the latest security patches and bug fixes, without having to manually update each container individually.

To use Watchtower, you can simply run it as a Docker container on your host, passing in the Docker socket as a volume mount. Watchtower will then monitor all running containers and check for available updates. When an update is available, it will stop the container, pull the latest image, and restart the container with the updated image.

Watchtower can be configured to run at regular intervals, such as daily or hourly, to ensure that containers are always up to date. It can also be configured to ignore certain containers or images, or to only update containers that have a certain label or tag.

Overall, Watchtower is a useful tool for managing Docker containers at scale, making it easier to keep them up to date and secure.