Как связать 2 docker compose локально

 Например из php нужно достучаться до бд

Контейнер с бд

networks:
    proxynet:
        name: custom_network

--

    db:
        container_name: *
        networks:
            - proxynet

Контейнер с пхп

networks:
    my-proxy-net:
        external:
            name: custom_network

--

    php:
        container_name: *
        networks:
            - my-proxy-net

затем

docker inspect custom_network

Получаем что-то вроде

[
    {
        "Name": "custom_network",
        "Id": "e5f4a8dc798ca4000975bcf2afc0e1fc177e4969af64f689c923e2503554e3ef",
        "Created": "2024-12-24T13:17:42.962860439+05:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
                {
                    "Subnet": "172.20.0.0/16",
                    "Gateway": "172.20.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "b4bff0825d1b9caa8c6819e12c8263a477cde611d54d840886f49d547edf24ac": {
                "Name": "some_db",
                "EndpointID": "d96fce9030f91234b56057cf13e5d26d2a16a3e92935656844ed22e96ccaff22",
                "MacAddress": "02:42:ac:14:00:02",
                "IPv4Address": "172.20.0.2/16",
                "IPv6Address": ""
            }
        },
        "Options": {},
        "Labels": {
            "com.docker.compose.network": "proxynet",
            "com.docker.compose.project": "docker",
            "com.docker.compose.version": "2.29.7"
        }
    }
]

-- 

 Где 172.20.0.1 - хост бд