📄 production optimizations

Dockerfile.nextjs

@@ -31,6 +31,11 @@ WORKDIR /app
 # Copy dependencies from deps stage
 COPY --from=deps /app/node_modules ./node_modules
 
+# Copy .env file for build-time variables
+# This file is created by CI/CD workflow from Gitea secrets
+# NEXT_PUBLIC_* variables are embedded in client-side bundle during build
+COPY .env* ./
+
 # Copy all application source code
 # This includes:
 # - app/ directory (Next.js 16 App Router)