<configuration>
							<outputDirectory>${project.build.directory}/generated-packaging/deb/</outputDirectory>
							<filters>
								<filter>${project.basedir}/src/packaging/common/packaging.properties</filter>
								<filter>${project.basedir}/src/packaging/deb/packaging.properties</filter>
							</filters>
							<resources>
								<resource>
									<directory>src/packaging/common/</directory>

     *
     * @param keyPattern The pattern to filter environment variable keys.
     * @return A map of filtered environment variables.
     */
    public Map<String, String> getFilteredEnvMap(final String keyPattern) {
        final Pattern pattern = Pattern.compile(keyPattern);
        return getEnvMap().entrySet().stream().filter(e -> {
            final String key = e.getKey();

            if (StringUtil.isNotBlank(requiredKeysStr) && StreamUtil.split(requiredKeysStr, ",")
                    .get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).anyMatch(name -> {
                        final String[] values = req.getParameterValues(name);
                        if (values == null || values.length == 0 || StringUtil.isEmpty(values[0])) {