fix: disable NX daemon and fix env vars for faster Docker builds

- Add NX_DAEMON=false to all Dockerfiles to prevent slow daemon startup
- Add --env-file flag to hackathon build for proper env var substitution

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

docker/landing.Dockerfile

@@ -4,6 +4,7 @@ WORKDIR /app
 COPY package.json package-lock.json ./
 RUN npm ci --prefer-offline --no-audit --no-fund
 COPY  . .
+ENV NX_DAEMON=false
 RUN npm run landing:build
 
 FROM node:22-alpine AS runner