diff --git a/Dockerfile b/Dockerfile
index a01eb1d..617bed9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,11 @@
 
 FROM node:22-alpine
 
+# Install build dependencies for native modules (sharp, etc.)
+# libc6-compat: Required for sharp on Alpine
+# python3 make g++: Required for node-gyp builds
+RUN apk add --no-cache libc6-compat python3 make g++
+
 WORKDIR /app
 
 # Copy package files first (for better Docker layer caching)