Hello Folks,

I'm trying to use the following docker-compose.yml:

version: '2.1'

volumes:
db-data:
app-tmp:

services:
  db:
    image: postgres:9.6
    restart: unless-stopped
    pids_limit: 150
    volumes:
     - "db-data:/var/lib/postgresql/data"
    env_file:
     - clair.env

When I try to run the containers, the following error is returned:

     Unsupported config option for services.db: 'pids_limit'

I'm using the documenation available at: https://docs.docker.com/compose/compose-file/compose-file-v2/#pidslimit and I have the following docker-compose version:

$ docker-compose --version
docker-compose version 1.12.0, build b31ff33

Can someone point me to the right way or syntax?

Thanks in advance.