When docker provisioning starting test-server in virtual box whole
virtual machine will reboot.
Let's remove docker until it's more stable or we know how to fix it.
Task-number: QTQAINFRA-2801
Change-Id: Iad7437a69c954a90522e44ef27015518fa3f8c1e
(cherry picked from commit 1865b99b527bd9eee80c39e95d47a44096e44e6a)
Reviewed-by: Aapo Keskimolo <aapo.keskimolo@qt.io>