readme updated with Singularity example

README.md

@@ -32,17 +32,30 @@ As long as a file name is indicated as second parameter, *gdown.pl v2.0* **will
 Version
 =======
 
-This version is **v1.3**.
+This version is **v1.4**.
 
 ### Warning
 
-Please, note that v1.2 (available between days 12 to 31 of Jan/2019) **should not be used**, as it contains a bug that could result in unusable downloaded files. Proceed to overwrite with v1.3 in case you have it.
+Please, note that v1.2 (available between days 12 to 31 of Jan/2019) **should not be used**, as it contains a bug that could result in unusable downloaded files. Proceed to overwrite with v1.4 in case you have it.
 
 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
+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
 =======

Singularity

@@ -0,0 +1,14 @@
+BootStrap: docker
+FROM: perl
+
+# This is the script that's executed when you don't call it with any script or shell to execute.
+%runscript
+        exec /usr/local/bin/gdown.pl "$@"
+
+%setup
+	cp gdown.pl ${SINGULARITY_ROOTFS}/usr/local/bin/
+
+# These commands will be executed inside of the container during building.
+%post
+	apt-get update
+	apt install -y wget

gdown.pl

@@ -5,7 +5,7 @@
 #
 # v1.0 by circulosmeos 04-2014.
 # v1.1 by circulosmeos 01-2017.
-# v1.2, v1.3 by circulosmeos 01-2019.
+# v1.2, v1.3, v1.4 by circulosmeos 01-2019, 02-2019.
 # //circulosmeos.wordpress.com/2014/04/12/google-drive-direct-download-of-big-files
 # Distributed under GPL 3 (//www.gnu.org/licenses/gpl-3.0.html)
 #
@@ -68,8 +68,8 @@ while (-s $FILENAME < 100000) { # only if the file isn't the download yet
 unlink $TEMP;
 
 sub execute_command() {
-    $COMMAND="wget --no-check-certificate --load-cookie $TEMP --save-cookie $TEMP \"$URL\"";
+    $COMMAND="wget --progress=dot:giga --no-check-certificate --load-cookie $TEMP --save-cookie $TEMP \"$URL\"";
     $COMMAND.=" -O \"$FILENAME\"" if $FILENAME ne '';
     system ( $COMMAND );
     return 1;
-}
+}