pass memory limit as argument to starttask.sh

src/scripts/starttask.sh

@@ -23,6 +23,7 @@ fi
 readonly task_id="$1"
 readonly logfile="$2"
 readonly nice="$3"
+readonly memory_limit_mb="$4"
 
 readonly service_name="box-task-${task_id}"
 systemctl reset-failed "${service_name}" || true
@@ -31,9 +32,9 @@ readonly id=$(id -u $SUDO_USER)
 readonly ubuntu_version=$(lsb_release -rs)
 
 if [[ "${ubuntu_version}" == "16.04" ]]; then
-    options="-p MemoryLimit=400M --remain-after-exit"
+    options="-p MemoryLimit=${memory_limit_mb}M --remain-after-exit"
 else
-    options="-p MemoryMax=400M --pipe --wait"
+    options="-p MemoryMax=${memory_limit_mb}M --pipe --wait"
 
     # Note: BindsTo will kill this task when the box is stopped. but will not kill this task when restarted!
     # For this reason, we have code to kill the tasks both on shutdown and startup.