There are 3 docker scripts available from github :

https://github.com/LCBRU/docker_redcap_upgrade

https://github.com/LCBRU/docker_redcap_v5.7.0

https://github.com/LCBRU/docker_redcap_fresh


REDCap 6.16.6

http://uhlbriccsapp02.xuhl-tr.nhs.uk/redcap/index.php

REDCap Software - Version 5.7.0 

http://uhlbriccsapp02.xuhl-tr.nhs.uk:81/redcap/index.php

Installation script
* Image
* CRON
* php upgrade