dockerfile healthcheck

docs/Dockerfile

@@ -29,6 +29,10 @@ FROM nginx:alpine
 # Copy built static files
 COPY --from=builder /app/build /usr/share/nginx/html
 
+# Healthcheck for container orchestration
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost/ || exit 1
+
 # Expose port
 EXPOSE 80