In order to use the docker compose files you have to remove the whole LICENSE DISCLAIMER, from START to END.
By removing these lines you accept the several different licenses used by the main software brought contained in each of the docker images, that you install. Which license this is you can see in the readme of every of those images on dockerhub.
This also means, that you yourself have the responsibility, that you combine the different licenses and download the different software used by translate5 and use them together. You do this on your own risk and need to make sure, that this works for you from a legal perspective and warranty perspective.
As with all Docker images, the installed images likely also contain other software which may be under other licenses (such as Bash, etc from the base distribution, along with any direct or indirect dependencies of the primary software being contained).
As for any pre-built image usage, it is the image user's responsibility to ensure that any use of these images complies with any relevant licenses for all software contained within.