怎样查看docker的端口

docker ps

CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS          PORTS                    NAMES
abc123def456   nginx:latest   "/docker-entrypoint.…"   2 minutes ago   Up 2 minutes   0.0.0.0:80->80/tcp       my-nginx

docker port <container_id_or_name>

docker port my-nginx

80/tcp -> 0.0.0.0:80

docker inspect <container_id_or_name> | grep -i port

docker inspect my-nginx | grep -i port

"Ports": {
                "80/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "80"
                    }
                ]
            },

version: '3'
services:
  web:
    image: nginx:latest
    ports:
      - "80:80"