The same as containrrr/watchtower
Just built with a different name to prevent HomeAssistant unhealthy status.
It seems that "containrrr/watchtower" is not allowed on HA but It's possible to bypass this just having the same image with another name.
https://hub.docker.com/r/kianda/mytower
TIP: To prevent issues on HA remember to set the environment variable "WATCHTOWER_LABEL_ENABLE"