fix: resolve EACCES permission issue and hydration error #418

Dockerfile

@@ -37,15 +37,18 @@ RUN adduser --system --uid 1001 nextjs
 
 COPY --from=builder /app/public ./public
 
-# Set the correct permission for prerender cache
-RUN mkdir .next
-RUN chown nextjs:nodejs .next
+# Set the correct permission for prerender cache and data storage
+RUN mkdir .next data
+RUN chown nextjs:nodejs .next data
 
 # Automatically leverage output traces to reduce image size
 # https://nextjs.org/docs/advanced-features/output-file-tracing
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 
+# Grant write access to /app for settings persistence
+RUN chown -R nextjs:nodejs /app
+
 USER nextjs
 
 EXPOSE 5643