[FrameworkBundle] Add configureContainer(), configureRoutes() and getCo… #15825
Description
| Q | A |
|---|---|
| Feature PR | symfony/symfony#42991 |
| PR author(s) | @nicolas-grekas |
| Merged in | 5.4 |
I want to document this feature as a way to write super small apps. Ie, just add a kernel, config and then use the container to serve the response.