chore: add build-time arg for showing About and Notice (#360)

Add outputFileTracingIncludes to next.config.ts to ensure instrumentation.ts
is included in standalone builds (required for App Runner deployment)

.github/workflows/docker-build.yml

@@ -63,6 +63,8 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
           platforms: linux/amd64,linux/arm64
+          build-args: |
+            NEXT_PUBLIC_SHOW_ABOUT_AND_NOTICE=true
 
       # Push to AWS ECR for App Runner auto-deploy
       - name: Configure AWS credentials

Dockerfile

@@ -26,6 +26,10 @@ ENV NEXT_TELEMETRY_DISABLED=1
 ARG NEXT_PUBLIC_DRAWIO_BASE_URL=https://embed.diagrams.net
 ENV NEXT_PUBLIC_DRAWIO_BASE_URL=${NEXT_PUBLIC_DRAWIO_BASE_URL}
 
+# Build-time argument to show About link and Notice icon
+ARG NEXT_PUBLIC_SHOW_ABOUT_AND_NOTICE=false
+ENV NEXT_PUBLIC_SHOW_ABOUT_AND_NOTICE=${NEXT_PUBLIC_SHOW_ABOUT_AND_NOTICE}
+
 # Build Next.js application (standalone mode)
 RUN npm run build
 

next.config.ts

@@ -10,6 +10,10 @@ const nextConfig: NextConfig = {
     env: {
         APP_VERSION: packageJson.version,
     },
+    // Include instrumentation.ts in standalone build for Langfuse telemetry
+    outputFileTracingIncludes: {
+        "*": ["./instrumentation.ts"],
+    },
 }
 
 export default nextConfig