Update Dockerfile

Dockerfile

@@ -1,8 +1,7 @@
-FROM node:18-alpine
-
+# Create app dir
 WORKDIR /app
 
-# Create user
+# Add user
 RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001
 
 COPY package*.json ./
@@ -10,10 +9,10 @@ RUN npm install
 
 COPY . .
 
-# Compile vite.config.ts to vite.config.js in a safe temp dir
-RUN npm run build:config && cp build-config/vite.config.js vite.config.js
+# Build and move config to writable /tmp
+RUN npm run build:config && mkdir -p /tmp/vite-config && cp build-config/vite.config.js /tmp/vite-config/vite.config.js
 
-# Ensure no write operations are needed in /app
+# Use non-root user
 USER nextjs
 
 EXPOSE 7860