fix(posts): update "How to run SearXNG with Docker"

Post: 2026-05-10-how-to-run-searxng-with-docker.md

Add instructions to enable format JSON in settings.yml

Author: remarkablemark

_posts/2026/2026-05-10-how-to-run-searxng-with-docker.md

@@ -1,9 +1,9 @@
 ---
 layout: post
 title: How to run SearXNG with Docker
-date: 2026-05-10 14:46:44
+date: 2026-05-10 15:22:16
 excerpt: How to install and run SearXNG with Docker.
-categories: searxng docker
+categories: searxng docker bash
 ---
 
 This post goes over how to install and run [SearXNG](https://github.com/searxng/searxng) with [Docker](https://www.docker.com/).
@@ -30,15 +30,59 @@ Start a new container:
 docker run -d --name searxng -p 8080:8080 searxng/searxng
 ```
 
-Then open in your browser:
+Open in your browser:
 
 ```sh
 open http://localhost:8080
 ```
 
+When requesting JSON, you will receive `403 Forbidden` error:
+
+```sh
+curl 'http://localhost:8080/search?q=test&format=json'
+```
+
+This is because you need to enable it in settings:
+
+```bash
+SECRET_KEY=$(openssl rand -hex 32)
+
+cat > settings.yml <<EOF
+use_default_settings: true
+
+server:
+  secret_key: "$SECRET_KEY"
+  bind_address: "0.0.0.0"
+  port: 8080
+
+search:
+  formats:
+    - html
+    - json
+EOF
+```
+
+Copy `settings.yml` into the container:
+
+```sh
+docker cp settings.yml searxng:/etc/searxng/settings.yml
+```
+
+Then restart the container:
+
+```sh
+docker restart searxng
+```
+
+Check the logs that it worked:
+
+```sh
+docker logs searxng --tail=100
+```
+
 ## Stop
 
-To stop and remove the container:
+Stop and remove the container:
 
 ```sh
 docker rm -f searxng