diff --git a/run/run.sh b/run/run.sh
index 27a6842..e1adf9c 100755
--- a/run/run.sh
+++ b/run/run.sh
@@ -3,8 +3,11 @@ set -eu
 
 # Docker environment vars
 
-: ${URL:=''}.               # URL of PAT file
-: ${ALLOCATE:='Y'} # Preallocate diskspace
+: ${URL:=''}.                     # URL of PAT file
+: ${ALLOCATE:='Y'}       # Preallocate diskspace
+: ${CPU_CORES:='1'}     # vCPU count
+: ${DISK_SIZE:='16G'}    # Initial disk size
+: ${RAM_SIZE:='512M'} # Amount of RAM
 
 echo "Starting Virtual DSM for Docker v${VERSION}..."