diff --git a/Dockerfile b/Dockerfile
index 178a92e..cb71442 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,9 +9,10 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /app
 
-# Install all deps (including devDeps for tsc)
+# Install all deps including devDeps (tsc needs them).
+# Override NODE_ENV so Coolify's build-time NODE_ENV=production doesn't skip devDeps.
 COPY package*.json ./
-RUN npm ci
+RUN NODE_ENV=development npm ci
 
 # Copy source and compile
 COPY tsconfig.json ./