diff --git a/backend/README.md b/backend/README.md
new file mode 100644
index 0000000..fa6b637
--- /dev/null
+++ b/backend/README.md
@@ -0,0 +1,18 @@
+# Backend
+
+# Run le backend
+
+## 1 - Run with Docker
+
+Depuis la racine du projet, lancez `docker compose up`.
+
+## 2 - Run with MongoDB Docker Image & on terminal
+
+- Lancer l'image de Docker MongoDB
+- N'oubliez pas de `npm install` dans le dossier backend si pas déjà fait.
+
+Puis
+```
+cd ./backend
+node server.js
+```
diff --git a/backend/app/config/mongodb.config.js b/backend/app/config/mongodb.config.js
index 0914e67..14998f2 100644
--- a/backend/app/config/mongodb.config.js
+++ b/backend/app/config/mongodb.config.js
@@ -1,3 +1,3 @@
 module.exports = {
-  url: "mongodb://127.0.0.1:27017/polynotfound"
+  url: "mongodb://mongodb:27017/polynotfound"
 };
diff --git a/docker-compose.yml b/docker-compose.yml
index 15b85cd..ee31835 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -22,7 +22,7 @@ services:
     volumes:
       - ./backend:/data/backend
       - ./backend/node_modules:/data/backend/node_modules
-      - ./backend/keys:/data/backend/keys
+      - ./backend/app:/data/backend/app
     ports:
       - 3000:3000
     depends_on: