Use expose instead of ports to avoid conflicts with the openpai service on master node.

[siaimes]

On the master node, ports 5432 and 3000 are binded by openpai. I have been exploring the Internet for a long time before finding a solution. This solution needs to modify the Postgres port declaration to expose instead of ports in docker-compose.yml.

Before

    ports:
      - "5432:5432"

After

    expose:
      - "5432"

For more details, please refer to my Github repository siaimes/openpaimarketplace .

[siaimes]

Solved by this PR