CT-364 Install lsb-release and nix use of sudo
CT-364 Install lsb-release and nix use of sudo

Fixes to the Dockerfile to make it work better.

ministryofjustice/correspondence_tool_staff,ministryofjustice/correspondence_tool_staff,ministryofjustice/correspondence_tool_staff,ministryofjustice/correspondence_tool_staff,ministryofjustice/correspondence_tool_staff