readme modified with Docker and Singularity

README.md

@@ -25,11 +25,35 @@ For example, to download [this video](https://drive.google.com/file/d/0B1L_hFrWJ
 
 As long as a file name is indicated (second parameter), gdown.pl **will try to resume the partially downloaded file** if an incomplete file with that name already exists. Please note that for this to work, wget must correctly provide --spider with --server-response (-S). Wget v1.17 at least is advised.
 
+Docker
+======
+
+A simple Docker file is provided, to build a simple Docker image with gdown.pl.    
+This has been used for pre-pulling data from a Google Drive to Kubernetes persistent volumes.    
+Thanks @anton-khodak
+
+Singularity
+===========
+
+An example [Singularity](https://sylabs.io/guides/3.2/user-guide/quick_start.html) file is provided.    
+Build the container:
+`sudo singularity build (imagename) Singularity`
+
+Run the container:
+`singularity run (imagename) (gdown.pl args)`
+
+Thanks to @ttbrunner
+
 License
 =======
 
 Distributed [under GPL 3](http://www.gnu.org/licenses/gpl-3.0.html)
 
+Disclaimer
+==========
+
+This software is provided "as is", without warranty of any kind, express or implied.
+
 More info
 =========