Update lxc_utils.py

Fix [this issue](#17)

lxc_autoscale/lxc_utils.py

@@ -194,7 +194,8 @@ def get_total_memory():
         int: The amount of available memory in MB.
     """
     try:
-        command_output = run_command("free -m | awk '/^MemTotal:/ {print $2}')")
+        # Fixed command by removing extra parenthesis
+        command_output = run_command("free -m | awk '/^MemTotal:/ {print $2}'")
         if not command_output:
             logging.warning("Failed to retrieve total memory. Defaulting to 0MB.")
             total_memory = 0
@@ -211,6 +212,13 @@ def get_total_memory():
     )
     return available_memory
 
+    available_memory = max(0, total_memory - DEFAULTS['reserve_memory_mb'])
+    logging.debug(
+        f"Total memory: {total_memory}MB, Reserved memory: {DEFAULTS['reserve_memory_mb']}MB, "
+        f"Available memory: {available_memory}MB"
+    )
+    return available_memory
+
 
 import time
 import logging