diff --git a/Dockerfile b/Dockerfile
index 0decd3c..987bc42 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,14 +4,13 @@ FROM node:18-alpine
 # Set working directory
 WORKDIR /app
 
-# Copy package files, config script, and install dependencies
+# Copy package files, config script
 COPY package.json package-lock.json esbuild.config.js ./
+# Copy application source before build so esbuild can locate entry files
+COPY . .
 # Install all dependencies, build with esbuild, then remove devDeps
 RUN npm ci && npm run build && npm prune --production
 
-# Copy application source
-COPY . .
-
 # Expose the application port
 EXPOSE 3000