fix: use npm install instead of npm ci in Dockerfile

npm ci requires package-lock.json which is at root level in monorepo.
npm install works without it.

apps/parapharmacy-api/Dockerfile

@@ -5,8 +5,8 @@ WORKDIR /app
 # Copy package files
 COPY package*.json ./
 
-# Install dependencies
-RUN npm ci --only=production
+# Install dependencies (production only)
+RUN npm install --omit=dev
 
 # Copy source code
 COPY src/ ./src/