Docker --parallel flag is now deprecated

[TrilipuT]

Since last Docker update i see warning message about parallel param.
This has been made as the default behavior:

docker-compose pull is now performed in parallel by default. You can opt out using the --no-parallel flag. The --parallel flag is now deprecated and will be removed in a future version.

https://github.com/docker/compose/blob/master/CHANGELOG.md#1210-2018-04-10

It should be removed from this script.

My docker info:

Engine: 18.03.1-ce
Compose: 1.21.1
Machine: 0.14.0
Notary: 0.6.1
Credential Helper: 0.6.0

[csandanov]

Thanks, we'll keep it for a while though. Not everyone has the latest docker

[csandanov]

The flag has been removed