This demonstrates how to build multiple sites using Hugo from either configuration files (config/foo.toml) and directories (config/bar).
Run mvn package.
Now you should have all those resources on the one hand inside target/generated-resources/hugo/... but also in your resulting JAR and by this available in your classpath at public/....
| Config | Output | in JAR |
|---|---|---|
config/foo.toml |
target/generated-resources/hugo/foo/ |
public/foo/ |
config/bar |
target/generated-resources/hugo/bar/ |
public/bar/ |
Please see pom.xml for details how this is being configured.