In order to build a custom docker image for the Denodo Platform, I would perform the following steps:
* Generate a Denodo Platform auto-installation XML file.
* Create a customized Dockerfile with the instructions to build a docker image using the Denodo Platform auto-installation file.
* Prepare a build folder with the auto-installation XML file (an unzipped Denodo Platform installer for Linux and the Dockerfile).
* Execute the docker build command in the build folder.
You can refer to the Knowledge Base article [How to create your own Docker images for Denodo Platform Containers](https://community.denodo.com/kb/en/view/document/How%20to%20create%20your%20own%20Docker%20images%20for%20Denodo%20Platform%20Containers) to get a detailed explanation of the above steps.
You can also have a look at the User Manual [Denodo Platform Container 8.0 QuickStart Guide](https://community.denodo.com/docs/html/document/8.0/en/Denodo%20Platform%20Container%208.0%20QuickStart%20Guide#h.4mp4fh5mrr42) for more information.
If you still need help and you have a valid support user account, please open a new support case at the [Denodo Support site](https://support.denodo.com) so that our Support Team will assist you.
Hope this helps!