fix: Fixes not copying docker volumes directory to backups.

docker-backup.sh

@@ -49,7 +49,7 @@ function copyVolumes() {
 
 function backup() {
   echo "Creating backup..."
-  tar -cvf "/tmp/$today.tar" "$temp"
+  tar -cvf "/tmp/$today.tar" "$1"
   gzip "/tmp/$today.tar"
   cp -R "/tmp/$today.tar.gz" "$backupdir"
   # Cleanup temporary files.
@@ -67,8 +67,11 @@ function main() {
   # copy stack configuration.
   copyStacks "$temp"
 
+  # copy stack configuration.
+  copyVolumes "$temp"
+
   # Create a tar to backup.
-  backup
+  backup "$temp"
 
   # Restart services.
   startServices