Running both frontend and backend in the same docker-compose file, and frontend being able to access the backend through docker-compose internal networks during the build phase.
Since both containers are on the same network after the build phase this shouldn't be a problem.
This would enable Next.js to build using SSG and ISG.
docker compose up -d backend
docker compose build frontend
This will fail because the frontend container does not have access to the backend container during build.