Make sure directory name is converted to lowercase

Since docker uses lower case volume names, make sure
to convert the current directory to lowercase before
passing it to the docker command.

compose/bin/removevolumes

@@ -1,4 +1,5 @@
 #!/bin/bash
+declare -l current_folder
 current_folder=${PWD##*/}
 docker volume rm ${current_folder}_appdata
 docker volume rm ${current_folder}_dbdata