private boolean hasAssemblyConfiguration(AssemblyConfiguration assemblyConfig) {
        return assemblyConfig != null &&
                (assemblyConfig.getInline() != null ||
                 assemblyConfig.getDescriptor() != null ||
                 assemblyConfig.getDescriptorRef() != null);
    }
Extract all files with a tracking archiver. These can be used to track changes in the filesystem and triggering
a rebuild of the image if needed ('docker:watch')
src/main/java/io/fabric8/maven/docker/assembly/DockerAssemblyManager.java