docs: add reference to the simple docker compose file in the root pro… #5725

All 874 tests pass, 8 skipped in 20m 36s

104 files ±0 104 suites ±0 20m 36s ⏱️ +6s
882 tests ±0 874 ✅ ±0 8 💤 ±0 0 ❌ ±0
889 runs ±0 881 ✅ ±0 8 💤 ±0 0 ❌ ±0

Results for commit f31a303. ± Comparison against earlier commit 7e6993c.