diff --git a/back-end/.dockerignore b/back-end/.dockerignore
new file mode 100644
index 0000000..19d5689
--- /dev/null
+++ b/back-end/.dockerignore
@@ -0,0 +1,5 @@
+node_modules
+dist
+.env
+.env.example
+nodemon.json
diff --git a/back-end/Dockerfile.back b/back-end/Dockerfile.back
index 9079939..269cce1 100644
--- a/back-end/Dockerfile.back
+++ b/back-end/Dockerfile.back
@@ -4,30 +4,14 @@ FROM node:22-alpine
 # Workdir definition
 WORKDIR /usr/src/back
 
-# Environment declaration variables
-ENV NODE_ENV="dev"
-ENV DB_HOST="briques_postgres"
-ENV DB_NAME="briques_db"
-ENV DB_USER="briques_llm"
-ENV DB_PASSWORD="briques_password_2025"
-ENV DB_PORT=5432
-
 COPY package.json ./
 
 RUN npm install
-
 RUN npm install -g pm2
 
 # Copy sources
 COPY . .
-
-# Setting up environment
-RUN echo "NODE_ENV=${NODE_ENV}" > .env \
-    && echo "DB_HOST=${DB_HOST}" >> .env \
-    && echo "DB_NAME=${DB_NAME}" >> .env \
-    && echo "DB_USER=${DB_USER}" >> .env \
-    && echo "DB_PORT=${DB_PORT}" >> .env \
-    && echo "DB_PASSWORD=${DB_PASSWORD}" >> .env
+COPY .env.production .env
 
 # Compilation des fichiers TypeScript
 RUN npm run build
@@ -40,5 +24,4 @@ RUN chmod -R u=rwx,g=,o= ./
 EXPOSE 3000
 
 # Start app
-CMD ["npm", "run", "startonly"]
-#CMD ["pm2", "start", "dist/app.js", "--no-daemon"]
+CMD ["pm2", "start", "dist/app.js", "--no-daemon"]