Having trouble connecting to the rcon

Hello,

I have a minecraft server running in a docker container and I can't connect to it via this tool.

I've checked the other issues and tried what I could, but no success.

My docker-compose for the server is:

```
version: "3.8"

services:
minecraft-server:
image: "itzg/minecraft-server:multiarch-latest"
container_name: "mc-pi"
ports:
- "25565:25565"
- "4711:4711"
volumes:
- "~/mc/data:/data"
networks:
- Minecraft
environment:
EULA: "true"
ENABLE_RCON: "true"
RCON_PASSWORD: "sabin"
RCON_PORT: 25575
TYPE: "PURPUR"
VERSION: "1.16.5"
PURPUR_BUILD: "LATEST"
MEMORY: "1000m"
tty: true
stdin_open: true
restart: always

volumes:
mc:

networks:
Minecraft:
```

And the docker-compose for the rcon is:
```
version: "3.8"

services:
web:
image: itzg/rcon
environment:
RWA_USERNAME: admin
RWA_PASSWORD: sabin
RWA_ADMIN: "TRUE"
RWA_RCON_HOST: minecraft-server
RWA_RCON_PASSWORD: sabin
ports:
- 4326:4326
- 4327:4327
networks:
- other

networks:
other:
external: true
name: mc_default
```

The folder structure is as follows:
```
.
├── mc
│ ├── data
│ ├── docker-compose.yml
└── rcon
└── docker-compose.yml
```

Also the docker network:
```
docker network ls
NETWORK ID NAME DRIVER SCOPE
3330c2b424c3 bridge bridge local
403bf6ad6186 host host local
f4a2d89db847 mc_Minecraft bridge local
a7593566ae8d mc_default bridge local
a78b132a0a4a none null local
66d83ced9f93 web bridge local
```

```
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
481df532f24d itzg/rcon "/usr/local/bin/node…" 14 minutes ago Up 14 minutes 0.0.0.0:4326-4327->4326-4327/tcp, :::4326-4327->4326-4327/tcp rcon_web_1
5167a15b7446 itzg/minecraft-server:multiarch-latest "/start" 18 minutes ago Up 18 minutes (healthy) 0.0.0.0:4711->4711/tcp, :::4711->4711/tcp, 0.0.0.0:25565->25565/tcp, :::25565->25565/tcp, 25575/tcp mc-pi
```

I've also tried using only one docker-compose file, same results:
```
version: "3.8"

services:
minecraft-server:
image: "itzg/minecraft-server:multiarch-latest"
container_name: "mc-pi"
ports:
- "25565:25565"
- "4711:4711"
volumes:
- "~/mc/data:/data"
# networks:
# - Minecraft
environment:
EULA: "true"
ENABLE_RCON: "true"
RCON_PASSWORD: "sabin"
RCON_PORT: 25575
TYPE: "PURPUR"
VERSION: "1.16.5"
PURPUR_BUILD: "LATEST"
MEMORY: "1000m"
tty: true
stdin_open: true
restart: always
web:
image: itzg/rcon
environment:
RWA_USERNAME: admin
RWA_PASSWORD: admin
RWA_ADMIN: "TRUE"
# is referring to the hostname of 'mc' compose service below
RWA_RCON_HOST: minecraft-server
# needs to match the password configured for the container, which is 'minecraft' by default
RWA_RCON_PASSWORD: sabin
ports:
- 4326:4326
- 4327:4327

volumes:
mc:
```

Any help is much appreciated! Thanks in advance!

Start by comparing the mc/docker-compose.yml and rcon/docker-compose.yml files with the listed container and network configuration. Reproduce the connection failure and determine whether the RCON web container can reach the Minecraft server; done means the web interface connects successfully to RCON.

Written by the indexing model from the issue text.