there is currently no official support for the paid versions for the 7.x release on docker. We only started with 8.x with official images for the developer and enterprise edition.
while we can not offer you a supported way to use 7.9.3 enterprise edition with docker, you could take this Dockerfile here and change the download URL to the version that you desire (https://binaries.sonarsource.com/CommercialDistribution/sonarqube-enterprise/) and build your own image from that.
hope that helps. we will have official images for the next LTS, so stay tuned
Thanks for your quick response, that’s a pity due to we wanted to have the latest LTS, but really thanks for the work around we can build the image then and use it!