Blog -RailsのCIのテスト実行時間を 10分から5分に高速化した話 - https://tech.findy.co.jp/entry/2024/03/04/100000 strategy: matrix: ci_node_index: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] steps: run: | TEST_FILES="$(find ./spec -type f -name "*_spec.rb" -exec ls -l {} + | sort -n -k 5 | awk '{print $9}' | xargs ./script echo $TEST_FILES bundle exec parallel_split_test $TEST_FILES --format progress --color