7080 is not valid address

Users Ratel
4

@Soultrans, The problem is with your --my flag. The my flag is not used to set the port. It is used to just let alpha know on what IP:port it is running so that it can be used by other nodes to communicate with this alpha.
The port is set by the -o (offset) flag.
So, setting -o 1 means the port is default port + 1

version: "3.2"
services:
  zero_info:
    image: dgraph/dgraph:latest
    volumes:
      - /home/server/dgraph_data/info:/dgraph
    ports:
      - 5081:5081
      - 6081:6081
    restart: on-failure
    command: dgraph zero --my=zero_info:5081 -o 1
  alpha_info:
    image: dgraph/dgraph:latest
    volumes:
      - /home/server/dgraph_data/info:/dgraph
    ports:
      - 8081:8081
      - 9081:9081
    restart: on-failure
    command: dgraph alpha --my=alpha_info:7081 -o 1 --lru_mb=2048 --zero=zero_info:5081
  ratel_info:
    image: dgraph/dgraph:latest
    ports:
      - 8001:8001
    command: dgraph-ratel

Can you try using this config?