diff --git a/Dockerfile b/Dockerfile
index e57cf252..7e78bf3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,11 @@
-FROM node:18
+FROM node:18-alpine
+
 WORKDIR /app
+
 COPY package*.json ./
-RUN npm ci
+RUN npm ci --omit=dev
+
 COPY . .
-ENV PORT=4000
+
 EXPOSE 4000
-CMD ["npm", "run", "start"]
+CMD ["npm", "start"]
diff --git a/index.js b/index.js
index 51ea8d1c..975cb715 100644
--- a/index.js
+++ b/index.js
@@ -13,7 +13,7 @@ const app = express();
 // --- Middlewares globaux ---
 app.use(
   cors({
-    origin: ["http://localhost:5173", "https://dsp5-archi-o24a-15m-g3.fr"],
+    origin: ["http://localhost:3000", "https://dsp5-archi-o24a-15m-g3.fr"],
     credentials: true,
   })
 );