diff --git a/.env b/.env
index 7ffd335..666f8e7 100644
--- a/.env
+++ b/.env
@@ -1,10 +1,13 @@
-# hostname and protocol
+# hostname and protocol (empty except for localhost, set to "https://")
 SEARX_HOSTNAME=localhost
-
-# empty unless SEARX_HOSTNAME is localhost in this case "https://"
 SEARX_PROTOCOL=https://
+SEARX_TLS=self_signed
 
-# Let's Encrypt : email provided
+# automaticaly update settings to the new version
+# comment this line if you made / will make some modifications to the settings
+SEARX_COMMAND=-f
+
+# Let's encrypt contact information
 LETSENCRYPT_EMAIL=email@example.com
 
 # Do you agree Let's Encrypt TOS https://letsencrypt.org/repository/
diff --git a/Caddyfile b/Caddyfile
index d1fe36d..2f341c3 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -1,5 +1,5 @@
 {$SEARX_PROTOCOL}{$SEARX_HOSTNAME} {
-  tls self_signed
+  tls {$SEARX_TLS}
   gzip {
     not /morty
   }
@@ -48,8 +48,18 @@
 	-Pragma
   }
 
+  cache {
+        match_path /static
+        status_header X-Cache-Status
+        default_max_age 12h
+        path /tmp/caddy-cache
+  }
+
+  rewrite /status /searx-checker/status.json
+
   proxy / 127.0.0.1:4040 {
         transparent
+	except /searx-checker/status.json
   }
 
   basicauth /filtron {$FILTRON_USER} {$FILTRON_PASSWORD}
@@ -57,7 +67,6 @@
         without /filtron
   }
 
-
   proxy /morty 127.0.0.1:3000
 
   limits {
@@ -66,4 +75,6 @@
 	body   /morty 5MB
   }
 
+  # ratelimit * /morty 150 300 hour
+
 }
diff --git a/README.md b/README.md
index 9a996a6..9065cde 100644
--- a/README.md
+++ b/README.md
@@ -5,26 +5,42 @@ See https://github.com/asciimoo/searx/issues/1561 )
 
 Do not use it for now : this is a work in progress and there is no antibot feature.
 
+## What is included ?
+
+- [Caddy](https://github.com/abiosoft/caddy-docker) as a reverse proxy (create a LetsEncrypt certificate automaticaly)
+- [filtron](https://github.com/asciimoo/filtron): See [#4](https://github.com/asciimoo/filtron/pull/4) to build the docker image.
+- [searx](https://github.com/asciimoo/searx): See [#1629](https://github.com/asciimoo/searx/pull/1629) to build the docker image.
+- [morty](https://github.com/asciimoo/morty): clone the project, then "make build" to create the docker image
+
 ## How to use it
 - [Install docker](https://docs.docker.com/install/)
 - [Install docker-compose](https://docs.docker.com/compose/install/)
 - Get searx-docker
 ```sh
-mkdir -p /opt
-cd /opt
+cd /usr/local
 git clone https://github.com/searx/searx-docker.git
+cd searx-docker
 ```
-- Configure the .env file
-- Check using ```docker-compose up```
-- If everything is working, then :
+- Edit the .env file according to your need
+- Check everything is working: ```./start.sh```,
+- ```cp searx-docker.service.template searx-docker.service```
+- edit the content of ```WorkingDirectory``` in the ```searx-docker.service``` file (only if the installation path is different from /usr/local/searx-docker)
+- Install the systemd unit :
 ```sh
-cp /opt/searx-docker/searx-docker.service  /etc/systemd/system
+systemctl enable $(pwd)/searx-docker.service
 systemctl start searx-docker.service
 ```
 
-## What is included ?
+## Custom docker-compose.yaml
 
-- [Caddy](https://github.com/abiosoft/caddy-docker) as a reverse proxy (take care to call LetsEncrypt)
-- [filtron](https://github.com/asciimoo/filtron): See [#4](https://github.com/asciimoo/filtron/pull/4) to build the docker image.
-- [searx](https://github.com/asciimoo/searx): See [#1629](https://github.com/asciimoo/searx/pull/1629) to build the docker image.
-- [morty](https://github.com/asciimoo/morty): clone the project, then "make build" to create the docker image
+Do not modify docker-compose.yaml otherwise you won't be able to update easily from the git repository.
+
+It is possible to the [extend feature](https://docs.docker.com/compose/extends/) of docker-compose :
+- stop the service : ```systemctl stop searx-docker.service```
+- create a new docker-compose-extend.yaml, check with ```start.sh```
+- update searx-docker.service (see SEARX_DOCKERCOMPOSEFILE)
+- restart the servie  : ```systemctl restart searx-docker.service```
+
+## How to update ?
+
+- Check the content of ```update.sh```
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 9e7557e..7485994 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -11,12 +11,14 @@ services:
     network_mode: host
     command: -email ${LETSENCRYPT_EMAIL} -agree=${LETSENCRYPT_AGREE} -log stdout -host ${SEARX_HOSTNAME} -conf /etc/Caddyfile
     volumes:
-      - ./Caddyfile:/etc/Caddyfile
-      - ./caddy:/root/.caddy
-      - ./srv:/srv
+      - ./Caddyfile:/etc/Caddyfile:rw
+      - ./caddy:/root/.caddy:rw
+      - ./srv:/srv:rw
+      - searx-checker:/srv/searx-checker:rw
     environment:
       - SEARX_HOSTNAME=${SEARX_HOSTNAME}
-      - SEARX_PROTOCOL=${SEARX_PROTOCOL}
+      - SEARX_PROTOCOL=${SEARX_PROTOCOL:-}
+      - SEARX_TLS=${SEARX_TLS:-}
       - FILTRON_USER=${FILTRON_USER}
       - FILTRON_PASSWORD=${FILTRON_PASSWORD}
     cap_drop:
@@ -43,14 +45,15 @@ services:
 
   searx:
     container_name: searx
-    image: searx
+    image: asciimoo/searx
     hostname: searx
     restart: always
     networks:
       searx:
          ipv4_address: 10.10.10.4
+    command: ${SEARX_COMMAND:-}
     volumes:
-      - ./searx:/etc/searx
+      - ./searx:/etc/searx:rw
     environment:
       - BIND_ADDRESS=10.10.10.4:8080
       - BASE_URL=https://${SEARX_HOSTNAME}/
@@ -74,7 +77,7 @@ services:
     networks:
       searx:
         ipv4_address: 10.10.10.5
-    command: -listen 10.10.10.5:3000 -timeout 3 -ipv6
+    command: -listen 10.10.10.5:3000 -timeout 6 -ipv6
     environment:
       - MORTY_KEY=${MORTY_KEY}
     logging:
@@ -83,9 +86,24 @@ services:
     cap_drop:
       - ALL
 
+  searx-checker:
+    container_name: searx-checker
+    image: searx/searx-checker
+    hostname: searx-checker
+    restart: always
+    networks:
+      searx:
+        ipv4_address: 10.10.10.6
+    command: -cron -o html/data/status.json http://10.10.10.4:8080
+    volumes:
+      - searx-checker:/usr/local/searx-checker/html/data:rw
+
 networks:
   searx:
     ipam:
       driver: default
       config:
         - subnet: 10.10.10.0/24
+
+volumes:
+  searx-checker:
diff --git a/searx-docker.service b/searx-docker.service
deleted file mode 100644
index c641a25..0000000
--- a/searx-docker.service
+++ /dev/null
@@ -1,22 +0,0 @@
-[Unit]
-Description=searx-docker service
-Requires=docker.service
-After=docker.service
-
-[Service]
-Restart=always
-
-WorkingDirectory=/opt/searx-docker/
-
-# Remove old containers, images and volumes
-ExecStartPre=/usr/local/bin/docker-compose down -v
-ExecStartPre=/usr/local/bin/docker-compose rm -fv
-
-# Compose up
-ExecStart=/usr/bin/docker-compose up
-
-# Compose down, remove containers and volumes
-ExecStop=/usr/local/bin/docker-compose down -v
-
-[Install]
-WantedBy=multi-user.target
diff --git a/searx-docker.service.template b/searx-docker.service.template
new file mode 100644
index 0000000..470454b
--- /dev/null
+++ b/searx-docker.service.template
@@ -0,0 +1,17 @@
+<[Unit]
+Description=searx service
+Requires=docker.service
+After=docker.service
+
+[Service]
+Restart=always
+
+Environment=SEARX_DOCKERCOMPOSEFILE=docker-compose.yaml
+
+WorkingDirectory=/usr/local/searx-docker
+
+ExecStart=/bin/sh -c "start.sh"
+ExecStop=/bin/sh -c "stop.sh"
+
+[Install]
+WantedBy=multi-user.target
diff --git a/start.sh b/start.sh
new file mode 100755
index 0000000..dbfecbf
--- /dev/null
+++ b/start.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+. ./util.sh
+
+if grep -q "MORTY_KEY=RemplaceWithARealKey!" .env; then
+    echo "In the .env file, you must configure MORTY_KEY" 1>&2
+    CANT_START=1
+fi
+
+if grep -q "FILTRON_PASSWORD=password" .env; then
+    echo "In the .env file, you must configure FILTRON_PASSWORD" 1>&2
+    CANT_START=1
+fi
+
+if [ $CANT_START ]; then
+    exit 1
+fi
+
+$DOCKERCOMPOSE -f $DOCKERCOMPOSEFILE down -v
+$DOCKERCOMPOSE -f $DOCKERCOMPOSEFILE rm -fv
+$DOCKERCOMPOSE -f $DOCKERCOMPOSEFILE up
diff --git a/stop.sh b/stop.sh
new file mode 100755
index 0000000..c11628b
--- /dev/null
+++ b/stop.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+. ./util.sh
+
+$DOCKERCOMPOSE -f $DOCKERCOMPOSEFILE down -v
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..ea0a0e9
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+. ./util.sh
+
+if [ ! -x "${which systemctl}" ]; then
+    echo "systemctl not found" 1>&2
+    exit 1
+fi
+
+if [ ! -x "${which git}" ]; then
+    echo "git not found" 1>&2
+    exit 1
+fi
+
+# stop the systemd service
+systemctl stop searx-docker.service
+
+# save local modification
+git stash push
+
+# update only if fast forward can be used, saver than "git pull --rebase"
+git pull --ff-only || {
+    git stash pop
+    echo "The local and remote branches have diverged. Please update manually."
+    echo "Use\n  systemctl start searx-docker.service\nto restart searx"
+    exit 1
+}
+
+# re-apply local modification
+git stash pop
+
+# update docker images
+docker-compose pull
+
+# update searx configuration
+source ./.env
+docker-compose run searx ${SEARX_COMMAND} -d
+
+# let the user see
+echo "Use\n  systemctl start searx-docker.service\nto restart searx"
diff --git a/util.sh b/util.sh
new file mode 100644
index 0000000..d208347
--- /dev/null
+++ b/util.sh
@@ -0,0 +1,28 @@
+BASE_DIR="$(dirname -- "`readlink -f -- "$0"`")"
+cd -- "$BASE_DIR"
+set -e
+
+DOCKERCOMPOSE=$(which docker-compose || echo "/usr/local/bin/docker-compose")
+DOCKERCOMPOSEFILE="${DOCKERCOMPOSEFILE:-docker-compose.yaml}"
+
+echo "use ${DOCKERCOMPOSEFILE}"
+
+if [ ! -x "$(which docker)" ]; then
+    echo "docker not found" 1>&2
+    exit 1
+fi
+
+if ! docker version > /dev/null 2>&1; then
+    echo "can't execute docker (current user: $(whoami))" 1>&2
+    exit 1
+fi
+
+if [ ! -x "${DOCKERCOMPOSE}" ]; then
+    echo "docker-compose not found" 1>&2
+    exit 1
+fi
+
+if [ ! -f "${DOCKERCOMPOSEFILE}" ]; then
+    echo "${DOCKERCOMPOSEFILE} not found" 1>&2
+    exit 1
+fi