# Custom Addon

    The addon market of Erda offers a rich repository of artifacts to meet the needs of most scenarios, and supports custom addon to meet the needs of some specific scenarios.

    # Custom Action

    The development process of action is as follows:

    1. Describe input parameters via spec.yml.
    2. Write debugging action.
    3. Write dockerfile to package and build.
    4. Write dice.yml.
    5. Debug action.

    The deliverable of an action is a Docker image. Developers only need to provide an executable file (/opt/action/run) in the image and grant permissions (chmod +x) in advance.

    When the pipeline is executed, it creates a Docker container from the image and calls the /opt/action/run file to run the logic defined by the developer.

    # Custom-Script Action

    Custom-Script is a special action that supports running custom commands. The default images provided by the platform include Java, Node.js, Golang and other compilation environments. Custom-Script accepts a list of script commands to be executed in order to facilitate addon development.

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