Docker – How to setup privileged in docker swarm

I am running a db2 container sample using this docker command.
Reference docker image

docker run -itd --name mydb2 --privileged=true -p 50000:50000 -e LICENSE=accept -e DB2INST1_PASSWORD=Notallowed1! -e DBNAME=testdb ibmcom/db2

It is working.
If I remove the –privileged=true I will get below error.

So, –privileged=true is mandatory.

I tried add this to docker swarm as a service using this command.

docker service create --name db2luw_1 --privileged=true -p target=50000 -e LICENSE=accept -e 'DB2INST1_PASSWORD=Notallowed1!' -e DBNAME=testdb -d ibmcom/db2

But getting this error.

unknown flag: --privileged
See 'docker service create --help'.

How to run this container in docker swarm?
Removing the –privileged is creating the service but useless as we will get connection error.I tested that.