Is the directory sufficient?

```
This package has a Debian revision number but there does not seem to be
an appropriate original tar file or .orig directory in the parent directory;
(expected one of nginx_1.17.0-1~eth.orig.tar.gz, nginx_1.17.0-1~eth.orig.tar.bz2,
nginx_1.17.0-1~eth.orig.tar.lzma,  nginx_1.17.0-1~eth.orig.tar.xz or nginx-package-build.orig)
```

.gitlab-ci.yml

@@ -4,6 +4,7 @@ image: containers.ethitter.com:443/docker/images/debian:stretch
 before_script:
   - apt-get update
   - apt-get -y --no-install-recommends install devscripts build-essential lintian
+  - mkdir ../nginx-package-build.orig
 
 package:
   stage: build