fix(og): match klz exact runner env and logic

Dockerfile

@@ -60,9 +60,19 @@ RUN pnpm build
 # Excel generation moved to post-deploy
 
 # Stage 2: Runner
-FROM git.infra.mintel.me/mmintel/runtime:latest AS runner
+FROM node:20-alpine AS runner
 WORKDIR /app
 
+# Install dependencies for health checks and system compatibility
+RUN apk add --no-cache libc6-compat curl
+
+# Create nextjs user and group
+RUN addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 nextjs && \
+    chown -R nextjs:nodejs /app
+
+USER nextjs
+
 ENV HOSTNAME="0.0.0.0"
 ENV PORT=3000
 ENV NODE_ENV=production