@droneblocks/node-red-dexi/flows/infrared_beam_detector.json

You want to make sure you don't lose any of your flow development. Make sure to map the host "flows" directory to the container directory as shown below. This will store the flow on your host machine if/when the container is destroyed.

[
    {
        "id": "fd6516fec0640c2a",
        "type": "tab",
        "label": "IR Beam Detector",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "aaf9fb84b67cb6fa",
        "type": "ros2-subscribe",
        "z": "fd6516fec0640c2a",
        "server": "27129f80a96ce509",
        "topicname": "/dexi/gpio_input_22",
        "messagetype": "",
        "x": 170,
        "y": 160,
        "wires": [
            [
                "73cefe89b5bcde39"
            ]
        ]
    },
    {
        "id": "d0dd544b2d1f5a39",
        "type": "debug",
        "z": "fd6516fec0640c2a",
        "name": "Print payload value",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 630,
        "y": 60,
        "wires": []
    },
    {
        "id": "73cefe89b5bcde39",
        "type": "change",
        "z": "fd6516fec0640c2a",
        "name": "",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "payload.data",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 380,
        "y": 160,
        "wires": [
            [
                "d0dd544b2d1f5a39",
                "53ba3f2c68d37870"
            ]
        ]
    },
    {
        "id": "53ba3f2c68d37870",
        "type": "switch",
        "z": "fd6516fec0640c2a",
        "name": "Toggle LED",
        "property": "payload",
        "propertyType": "msg",
        "rules": [
            {
                "t": "true"
            },
            {
                "t": "false"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 2,
        "x": 610,
        "y": 160,
        "wires": [
            [
                "b379b0eeaac7a704"
            ],
            [
                "36145a1770a07842"
            ]
        ]
    },
    {
        "id": "b379b0eeaac7a704",
        "type": "led",
        "z": "fd6516fec0640c2a",
        "name": "White LED",
        "color": "white",
        "x": 790,
        "y": 120,
        "wires": [
            [
                "cf73f9c50175499c"
            ]
        ]
    },
    {
        "id": "36145a1770a07842",
        "type": "led",
        "z": "fd6516fec0640c2a",
        "name": "LED off",
        "color": "black",
        "x": 780,
        "y": 180,
        "wires": [
            [
                "cf73f9c50175499c"
            ]
        ]
    },
    {
        "id": "cf73f9c50175499c",
        "type": "ros2-service-call",
        "z": "fd6516fec0640c2a",
        "server": "27129f80a96ce509",
        "x": 1000,
        "y": 140,
        "wires": [
            []
        ]
    },
    {
        "id": "27129f80a96ce509",
        "type": "ros2-websocket-server",
        "url": "ws://192.168.4.1:9090"
    }
]