diff --git a/.env b/.env
index bc495ad..d3471c8 100644
--- a/.env
+++ b/.env
@@ -37,5 +37,5 @@ MESSENGER_TRANSPORT_DSN=doctrine://default?auto_setup=0
 ###< symfony/messenger ###
 
 ###> symfony/mailer ###
-# MAILER_DSN=null://null
+MAILER_DSN=smtp://mailer:1025
 ###< symfony/mailer ###
diff --git a/README.md b/README.md
index 96e738d..9a51f17 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@
 * The JSON extension must be enabled
 * The Ctype extension must be enabled
 * The date.timezone parameter must be defined in php.ini
+* Docker & Docker-compose
 
 More information on [symfony website](https://symfony.com/doc/6.2/reference/requirements.html).
 
@@ -17,11 +18,9 @@ Messenger provides a message bus with the ability to send messages and then hand
 Command lines:
 
 ```bash
-# clone current repot
 composer install
 
 # (optional) Copy and edit configuration values ".env.local"
-# Edit "MAILER_DSN" in .env.local with SMTP service (example: mailtrap)
 
 php bin/console doctrine:database:create
 php bin/console doctrine:migrations:migrate -n
@@ -33,12 +32,18 @@ php bin/console doctrine:fixtures:load -n
 Just execute this command to run the built-in web server _(require [symfony installer](https://symfony.com/download))_ and access the application in your browser at <http://localhost:8000>:
 
 ```bash
+docker-compose up -d
 symfony server:start
 
 # Launch Messages service
 symfony console messenger:consume async
+
+# For stop services
+docker-compose stop && symfony server:stop
 ```
 
+For look at emails send by the smtp service, look at this url <http://localhost:1080> (maildev).
+
 Debug commands:
 
 ```shell
diff --git a/docker-compose.override.yml b/docker-compose.override.yml
deleted file mode 100644
index 70c043b..0000000
--- a/docker-compose.override.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-version: '3'
-
-services:
-###> symfony/mailer ###
-  mailer:
-    image: schickling/mailcatcher
-    ports: ["1025", "1080"]
-###< symfony/mailer ###
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..7490a01
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,7 @@
+version: '3.6'
+services:
+  mailer:
+    image: maildev/maildev
+    ports:
+      - "1080:1080"
+      - "1025:1025"
\ No newline at end of file
diff --git a/templates/base.html.twig b/templates/base.html.twig
index b72f224..2f596e1 100644
--- a/templates/base.html.twig
+++ b/templates/base.html.twig
@@ -15,6 +15,7 @@
             <div class="collapse navbar-collapse">
                 <ul class="navbar-nav me-auto mb-2 mb-md-0">
                     <li class="nav-item"><a class="nav-link active" href="{{ path('dossierList') }}">Index</a></li>
+                    <li class="nav-item"><a class="nav-link" href="http://localhost:1080" target="_blank">Mailer</a></li>
                     <li class="nav-item"><a class="nav-link" href="//symfony.com/doc/current/">Symfony Doc</a></li>
                     {% block menu %}{% endblock %}
                     {% if not app.user %}