As a plugin developer you can use this plugin as dependency of your plugin by adding a dependency tag to your POM.
To add the latest version of this plugin as a maven dependency, use the following:
<dependency>
    <groupId>io.jenkins.plugins</groupId>
    <artifactId>kubernetes-ephemeral-container</artifactId>
    <version>28.vc9eb_a_db_2b_2a_6</version>
</dependency>