Updated IoT Gateway getting started guide

Author: samson0v

src/assets/images/gateway/dashboard/gateway-getting-started-modbus-15-ce.png

@@ -0,0 +1,71 @@
+import { Steps, Aside } from '@astrojs/starlight/components';
+import ImageGallery from '~/components/ImageGallery.astro';
+import Checklist from '~/components/Checklist.astro';
+import Box from '~/components/tutorial/Box.astro';
+
+First, add a gateway device to your ThingsBoard instance by following these steps:
+
+<Steps>
+1. Go to **Entities** > **Gateways** tab.
+
+   <ImageGallery images={[
+     {
+       src: '/src/assets/images/gateway/dashboard/gateway-getting-started-1-ce.png',
+       alt: 'Go to Entities > Gateways tab',
+     },
+   ]} />
+
+2. Click the **+** button, enter the gateway device name (e.g., "My Gateway"), and select the device profile. Click on **Create** button.
+
+   <ImageGallery images={[
+     {
+       src: '/src/assets/images/gateway/dashboard/gateway-getting-started-2-ce.png',
+       alt: 'Create new gateway device',
+     },
+   ]} />
+</Steps>
+
+<Aside type="note">
+If you've previously configured the gateway, create a backup, as the new remote configuration will overwrite existing settings files.
+For those who used a gateway version earlier than 3.4, the gateway will automatically generate a new configuration file in JSON format.
+</Aside>
+
+To launch the gateway, use the following steps:
+
+<Steps>
+1. Select and click on newly created gateway, click on **Launch command** button in the top right corner.
+
+   <ImageGallery images={[
+     {
+       src: '/src/assets/images/gateway/dashboard/gateway-getting-started-3-ce.png',
+       alt: 'Click Launch command button',
+     },
+   ]} />
+
+2. Click to download `docker-compose.yml` file to your PC, copy command and execute it in your terminal.
+
+   <ImageGallery images={[
+     {
+       src: '/src/assets/images/gateway/dashboard/gateway-getting-started-4-ce.png',
+       alt: 'Download docker-compose.yml and run command',
+     },
+   ]} />
+</Steps>
+
+After running gateway docker image, you can see the following logs in your terminal:
+
+<ImageGallery images={[
+  {
+    src: '/src/assets/images/gateway/dashboard/launch-gateway-docker.png',
+    alt: 'Gateway Docker logs in terminal',
+  },
+]} />
+
+<Box icon="check-list">
+### Checklist for Moving On
+
+<Checklist>
+- [ ] I have created a gateway device in ThingsBoard.
+- [ ] I have launched the gateway using Docker.
+</Checklist>
+</Box>

src/assets/images/gateway/dashboard/gateway-getting-started-modbus-16-ce.png

@@ -0,0 +1,35 @@
+import { Steps } from '@astrojs/starlight/components';
+import ImageGallery from '~/components/ImageGallery.astro';
+import Checklist from '~/components/Checklist.astro';
+import Box from '~/components/tutorial/Box.astro';
+
+To view gateway and connector logs on the platform side, you need to enable remote logging. For this purpose,
+use the following steps:
+
+<Steps>
+1. On selected gateway page, click on **General configuration** button on the right panel.
+
+   <ImageGallery images={[
+     {
+       src: '/src/assets/images/gateway/dashboard/general-configuration-1-ce.png',
+       alt: 'Click General configuration button',
+     },
+   ]} />
+
+2. Navigate to the **Logs** tab. Enable the **Remote logging** toggle. Select **DEBUG** in the **Log level** drop-down menu. Click on the **Save** button to apply changes.
+
+   <ImageGallery images={[
+     {
+       src: '/src/assets/images/gateway/dashboard/general-configuration-2-ce.png',
+       alt: 'Enable remote logging and set log level to DEBUG',
+     },
+   ]} />
+</Steps>
+
+<Box icon="check-list">
+### Checklist for Moving On
+
+<Checklist>
+- [ ] I have enabled remote logging for the gateway.
+</Checklist>
+</Box>