Unable to establish a connection between Apache Superset and cube js using SQL API

Question

We have deployed cube.js using docker in one of the linux machines (Ubuntu). We have deployed Apache Superset in another linux machine (Ubuntu). We are trying to establish a connection between "Apache Superset" and "cube.js" using SQL API, but for some reason we are not able to establish a connection. Since cube.js and Apache superset are running on different machines, what are the values that we need to provide for the "HOST","PORT","DATABASE NAME", "USERNAME", "PASSWORD" in Superset when using PostgreSQL connection ?

These are the contents of the docker-compose.yml file using which cube.js is being hosted :

version: '2.2'

services:
  cube:
    image: cubejs/cube:latest
    ports:
      - 4000:4000
      - 5433:5433
    environment:
      - CUBEJS_DEV_MODE=true
      - CUBEJS_DB_TYPE=bigquery
      - CUBEJS_DB_BQ_PROJECT_ID=<Our BigQuqery project ID>
      - CUBEJS_DB_BQ_KEY_FILE=<Path to Bigquery key file>
      - CUBEJS_CACHE_AND_QUEUE_DRIVER=memory
      - CUBEJS_PG_SQL_PORT=5433
      - CUBEJS_SQL_USER=test
      - CUBEJS_SQL_PASSWORD=test
     volumes:
      - ./schema:/cube/conf/schema
      - .:/cube/conf

Thanks