@Nullable
  String getWorkingDirectory() {
    String property = getProperty(PropertyNames.CONTAINER_WORKING_DIRECTORY);
    if (property != null) {
      return property;
    }
    return container.workingDirectory;
  }
Gets the working directory in the container.

@return the working directory
jib-maven-plugin/src/main/java/com/google/cloud/tools/jib/maven/JibPluginConfiguration.java