Add SearXNG

apps/searxng/config.json

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+{
+  "$schema": "../schema.json",
+  "name": "SearXNG",
+  "available": true,
+  "port": 8107,
+  "id": "searxng",
+  "tipi_version": 1,
+  "version": "latest",
+  "categories": ["social"],
+  "description": "SearXNG is a free internet metasearch engine which aggregates results from various search services and databases. Users are neither tracked nor profiled.",
+  "short_desc": "Privacy-respecting, hackable metasearch engine",
+  "author": "searxng",
+  "source": "https://github.com/searxng/searxng",
+  "form_fields": []
+}

apps/searxng/docker-compose.yml

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+version: "3.7"
+
+services:
+  searxng:
+    container_name: searxng
+    image: searxng/searxng:latest
+    restart: unless-stopped
+    networks:
+      - tipi_main_network
+    volumes:
+      - "${APP_DATA_DIR}/data:/etc/searxng"
+    ports:
+      - ${APP_PORT}:8080
+    environment:
+      - BIND_ADDRESS=0.0.0.0:8080
+      - BASE_URL=https://`${APP_DOMAIN}/
+    labels:
+      traefik.enable: ${APP_EXPOSED}
+      traefik.http.routers.searxng.rule: Host(`${APP_DOMAIN}`)
+      traefik.http.routers.searxng.entrypoints: websecure
+      traefik.http.routers.searxng.service: searxng
+      traefik.http.routers.searxng.tls.certresolver: myresolver
+      traefik.http.services.searxng.loadbalancer.server.port: 8080

apps/searxng/metadata/description.md

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+## Privacy-respecting, hackable metasearch engine
+
+SearXNG is a free internet metasearch engine which aggregates results from more than 70 search services. Users are neither tracked nor profiled. Additionally, SearXNG can be used over Tor for online anonymity.
+
+### Differences to searx
+
+SearXNG is a fork of searx. Here are some of the changes:
+
+- User experience
+- Huge update of the simple theme:
+  - usable on desktop, tablet and mobile
+  - light and dark versions (you can choose in the preferences)
+  - support right-to-left languages
+- the translations are up to date, you can contribute on Weblate
+- the preferences page has been updated:
+  - you can see which engines are reliable or not
+  - engines are grouped inside each tab
+  - each engine has a description
+- thanks to the anonymous metrics, it is easier to report a bug of an engine and thus engines get fixed more quickly
+  - if you don't want any metrics to be recorded, you can disable them on the server
+- administrator can block and/or replace the URLs in the search results