default SELF withFileFromPath(String path, Path filePath, Integer mode) {
        final MountableFile mountableFile = MountableFile.forHostPath(filePath, mode);
        return ((SELF) this).withFileFromTransferable(path, mountableFile);
    }
Adds file with given mode to tarball copied into container.
@param path in tarball
@param filePath in host filesystem
@param mode octal value of posix file mode (000..777)
@return self
core/src/main/java/org/testcontainers/images/builder/traits/FilesTrait.java