@droneblocks/node-red-dexi/src/write-gpio.html

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.

<script type="text/javascript">
    RED.nodes.registerType('write-gpio', {
        category: 'DEXI',
        color: '#fef5ff',
        defaults: {
            pinnumber: {value: 21, required: true},
            pinstate: {value: false, required: true},
            stampheader: {
                value: false
            }
        },
        inputs:1,
        outputs:1,
        align: 'right',
        paletteLabel: 'write gpio',
        icon: "icon.png",
        label: function() {
            return this.topicname || "write gpio";
        }
    })
</script>

<script type="text/html" data-template-name="write-gpio">
    <div class="form-row">
        <label for="node-input-pinnumber">Pin Number</label>
        <select id="node-input-pinnumber">
            <option value="21">21</option>
            <option value="21">22</option>
            <option value="21">23</option>
            <option value="21">24</option>
            <option value="21">25</option>
        </select>
    </div>

    <div class="form-row">
        <label for="node-input-pinstate">Pin State</label>
        <select id="node-input-pinstate">
            <option value="true">High</option>
            <option value="false">Low</option>
        </select>
    </div>
</script>

<script type="text/html" data-help-name="write-gpio">
    <p>Write gpio data</p>
</script>