Hello @coooolers here are the steps please follow

Make sure you have maven downloaded and installed on your machine i.e open CMD and type mvn -v if you see anything that is not error then you have installed it successfully
Clone the Project to any location you live, then cd to the project, and then type mvn install to build the project, target folder will be created then find a file with .war
Install Glassfish Server follow this link below to finish the rest of the installation Thanks

Installation Procedure #15

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