diff --git a/validation/start-nomad.sh b/validation/start-nomad.sh
index 215506f..39b9474 100755
--- a/validation/start-nomad.sh
+++ b/validation/start-nomad.sh
@@ -2,7 +2,14 @@
 set -ue
 
 NOMAD_VERSION="1.8.1"
-NOMAD_PLATFORM="linux_amd64"
+NOMAD_PLATFORM=${NOMAD_PLATFORM:-linux_amd64}
+
+## Available platforms
+#- "linux_amd64"
+#- "linux_arm64"
+#- "darwin_amd64"
+#- "darwin_arm64"
+#- "windows_amd64"
 
 SECURE=0
 [[ "$@" =~ '--secure' ]] && SECURE=1
@@ -10,7 +17,8 @@ SECURE=0
 if [ ! -f ./nomad ]; then
   curl -O "https://releases.hashicorp.com/nomad/${NOMAD_VERSION}/nomad_${NOMAD_VERSION}_${NOMAD_PLATFORM}.zip"
   unzip nomad_${NOMAD_VERSION}_${NOMAD_PLATFORM}.zip
-  rm -f nomad_${NOMAD_VERSION}_${NOMAD_PLATFORM}.zip
+  rm -f nomad_${NOMAD_VERSION}_${NOMAD_PLATFORM}.zip LICENSE.txt
+  chmod +x ./nomad
 fi
 
 mkdir -p nomad_temp
@@ -53,7 +61,7 @@ if [ "$SECURE" == 0 ]; then
   # basic nomad cluter
   ../nomad agent -config server.conf -config client.conf -config server-custom.conf -config client-custom.conf
 else
-  # secured nomad cluster
+# secured nomad cluster
 ../nomad agent -config server.conf -config client.conf -config server-custom.conf -config client-custom.conf &
 cd ..
 ./wait-nomad.sh
@@ -62,4 +70,4 @@ NOMAD_TOKEN=$(nomad acl bootstrap | awk '/^Secret ID/ {print $4}')
 export NOMAD_TOKEN
 echo New super token generated.
 echo export NOMAD_TOKEN=$NOMAD_TOKEN
-fi
+fi
\ No newline at end of file