If Time Machine regularly does its automated backups, transferring 10+ GB of hidden Docker data over WiFi will hurt productivity.
Exclude Docker from Time Machine
Robust solution is to exclude Docker’s data paths from backups in
System Preferences > Time Machine > Options....
Depending on what kind of Docker setup it is, one (or both) of the following paths should be added to excluded paths in Time Machine options:
Docker Desktop (formerly Docker for Mac)
Backup gains from Docker containers
For many developers the idea to exclude Docker from Time Machine backups will result in a sizable backup reduction:
$ du -h ~/.docker ... 20G /Users/ain/.docker $ du -h ~/Library/Containers/com.docker.docker/Data ... 50G /Users/ain/Library/Containers/com.docker.docker/Data