Enable redis addon

Signed-off-by: Rafael Caricio <rafael@caricio.com>

CloudronManifest.json

@@ -9,7 +9,8 @@
   "healthCheckPath": "/",
   "httpPort": 8888,
   "addons": {
-    "localstorage": {}
+    "localstorage": {},
+    "redis": {}
   },
   "manifestVersion": 2,
   "website": "https://docs.searxng.org",

start.sh

@@ -18,6 +18,7 @@ if [[ ! -f /app/data/settings.yml ]]; then
     echo "=> Copying settings from template on first run"
     cp /app/code/searx/settings.yml.orig /app/data/settings.yml
     sed -e 's/bind_address: "127.0.0.1"/bind_address: "0.0.0.0"/g' \
+        -e "s/url: .*redis\.sock.*/url: \"redis:\/\/:${CLOUDRON_REDIS_PASSWORD}@${CLOUDRON_REDIS_HOST}:${CLOUDRON_REDIS_PORT}\/0\"/g" \
         -e "s/ultrasecretkey/`openssl rand -hex 16`/g" \
         -i /app/data/settings.yml
 fi