Docker CMD compatibility (#7861)
Some caller systems do not seem escape the CMD quotes correctly.
fix https://github.com/FreshRSS/FreshRSS/issues/7859#issuecomment-3225691432
fix https://github.com/FreshRSS/FreshRSS/discussions/5611
fix https://github.com/FreshRSS/FreshRSS/discussions/7267