dix docker

backend/Dockerfile

@@ -10,7 +10,12 @@ WORKDIR /app
 COPY package*.json ./
 
 # Install dependencies
-RUN npm ci --only=production
+# Use npm ci if package-lock.json exists, otherwise npm install
+RUN if [ -f package-lock.json ]; then \
+        npm ci --omit=dev; \
+    else \
+        npm install --only=production; \
+    fi
 
 # Stage 2: Production stage
 FROM node:20-alpine