diff --git a/backend/services/mpc-service/Dockerfile b/backend/services/mpc-service/Dockerfile
index bea699fd..bb4928ee 100644
--- a/backend/services/mpc-service/Dockerfile
+++ b/backend/services/mpc-service/Dockerfile
@@ -25,6 +25,9 @@ COPY src ./src
 # Build TypeScript
 RUN npm run build
 
+# Verify build output exists
+RUN ls -la dist/ && test -f dist/main.js
+
 # Production stage - use Debian slim for OpenSSL compatibility
 FROM node:20-slim
 
@@ -64,4 +67,4 @@ HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
   CMD node -e "require('http').get('http://localhost:3006/api/v1/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
 
 # Start service
-CMD ["node", "dist/src/main.js"]
+CMD ["node", "dist/main.js"]