[Proxmox] Added trim script

Linux/proxmox/container_trim.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# find container ids
+containers=( $(pct list | awk -F " " '{print $1}') )
+containers=("${containers[@]:1}")
+
+# execute trim for each container
+for container in "${containers[@]}"; do
+  pct fstrim $container
+done