Update Ollama instructions

src/default-providers/Ollama/instructions.ts

@@ -1,18 +1,70 @@
 export default `
 Ollama allows to run large language models locally on your machine.
 To use it you need to install the Ollama CLI and pull the model you want to use.
+
 1. Install the Ollama CLI by following the instructions at <https://ollama.com/download>
+
 2. Pull the model you want to use by running the following command in your terminal:
+
    \`\`\`bash
    ollama pull <model-name>
    \`\`\`
+
    For example, to pull the Llama 2 model, run:
+
    \`\`\`bash
    ollama pull llama2
    \`\`\`
+
 3. Once the model is pulled, you can use it in your application by running the following command:
+
     \`\`\`bash
     ollama serve
     \`\`\`
+
 4. This model will be available in the extension, using the model name you used in the command above.
+
+<details>
+<summary>Deploying Lite/Lab on external server</summary>
+
+See https://objectgraph.com/blog/ollama-cors/ for more details.
+
+On Linux, you can run the following commands:
+
+1. Check if CORS is enabled on the server. You can do this by running the following command in your terminal:
+
+   \`\`\`bash
+   curl -X OPTIONS http://localhost:11434 -H "Origin: http://example.com" -H "Access-Control-Request-Method: GET" -I
+   \`\`\`
+
+   If CORS is disabled, you will see a response like this:
+
+   \`\`\`bash
+   HTTP/1.1 403 Forbidden
+   Date: Wed, 09 Oct 2024 10:12:15 GMT
+   Content-Length: 0
+    \`\`\`
+
+2. If CORS is not enabled, update _/etc/systemd/system/ollama.service_ with:
+
+   \`\`\`bash
+   [Service]
+   Environment="OLLAMA_HOST=0.0.0.0"
+   Environment="OLLAMA_ORIGINS=*"
+   \`\`\`
+
+3. Restart the service:
+
+   \`\`\`bash
+   sudo systemctl daemon-reload
+   sudo systemctl restart ollama
+   \`\`\`
+
+4. Check if CORS is enabled on the server again by running the following command in your terminal:
+
+    \`\`\`bash
+    curl -X OPTIONS http://localhost:11434 -H "Origin: http://example.com" -H "Access-Control-Request-Method: GET" -I
+    \`\`\`
+
+</details>
 `;