diff --git a/back-end/Dockerfile.back b/back-end/Dockerfile.back
index 269cce1..b98e101 100644
--- a/back-end/Dockerfile.back
+++ b/back-end/Dockerfile.back
@@ -4,15 +4,14 @@ FROM node:22-alpine
 # Workdir definition
 WORKDIR /usr/src/back
 
-COPY package.json ./
-
-RUN npm install
-RUN npm install -g pm2
-
 # Copy sources
 COPY . .
 COPY .env.production .env
 
+# install deps, and pm2 to run the app
+RUN npm install
+RUN npm install -g pm2
+
 # Compilation des fichiers TypeScript
 RUN npm run build