You don’t need docker to run brxm. However, SunOS is not an officially supported platform. This does not mean it won’t work, it means we don’t test on that platform and can promise no fix or even investigation of any issue that relates to that plaftorm. Disclaimer aside, with maven and cargo you can start the project locally. If not, you can install a local tomcat and database.
Basically, install tomcat and your favorite rdbms (I suggest mysql as it is the most commonly used). Create a distribution and deploy it to your tomcat. How to confugire is documented.