Requisites

In order to contribute to these repositories you need the following:

• Java JDK 1.14 or higher
• An IDE: I really like IntelliJ (Community edition is free)
• NodeJs 12.12.0 or higher
• Yarn
• Maven

Then create the file ~/.m2/settings.xml

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">

  <servers>
    <server>
      <id>github-matag-cards</id>
      <username>antonioalonzi</username>
      <password>d5db92b2c94d460a77c8dd1f182082d94ebbe5e0</password>
    </server>
    <server>
      <id>github-matag-admin-entities</id>
      <username>antonioalonzi</username>
      <password>d5db92b2c94d460a77c8dd1f182082d94ebbe5e0</password>
    </server>
  </servers>
</settings>

Don't worry, it's a readonly token that allow to download packages. You can use it. (Alternatively you can create your own token... but why waste time?)

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Read the specific README of the project you are going to contribute.

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To get started please have a quick read to our architecture guide.