Unable to execute commands

Hi!

I'm running a server with the openrct2-cli docker image like this:

name: openrct
services:
    openrct2-cli:
        ports:
            - "11753:11753/tcp"
            - "11753:11753/udp"
            - "11754:11754/tcp"
        volumes:
            - ./config:/home/openrct2/.config
            - "./RollerCoaster Tycoon Deluxe:/home/openrct2/RollerCoaster Tycoon Deluxe"
            - "./Rollercoaster Tycoon 2:/home/openrct2/RollerCoaster Tycoon 2"
        stdin_open: true
        tty: true
        image: openrct2/openrct2-cli
        command: host /home/openrct2/.config/OpenRCT2/save/server.park

I've been trying to send save_park to the server by piping standard input directly using docker exec:

echo 'save_park' | docker exec -i openrct-openrct2-cli-1 sh -c "cat > /proc/1/fd/0"

Which shows up in the logs of the server:

openrct2-cli-1  | Listening for clients on *:11753
openrct2-cli-1  | console.executeLegacy("say Server restarting in 5 minutes!");
openrct2-cli-1  | console.executeLegacy("say Server restarting in 5 minutes!");
openrct2-cli-1  | say Server restarting in 5 minutes!
openrct2-cli-1  | save
openrct2-cli-1  | save
openrct2-cli-1  | save_park remote
openrct2-cli-1  | save_park
openrct2-cli-1  | save_park random-test
openrct2-cli-1  | save_park

I've tried many commands but nothing seems to actually execute or do anything?

How should I be calling a 'save my current park on the server' command?

Came here partial through https://github.com/OpenRCT2/OpenRCT2/issues/7549

Start by reproducing the docker-compose service and the docker exec pipeline shown in the issue, then inspect how the OpenRCT2 CLI host command reads standard input. Verify whether save_park reaches the server as an executable command rather than only appearing in logs. Done means documenting or confirming a command invocation that saves the current server park.