brew install flyctl && fly launch --from https://github.com/sangjun121/java-pairmatching-precourse
curl -L https://fly.io/install.sh | sh && fly launch --from https://github.com/sangjun121/java-pairmatching-precourse
iwr https://fly.io/install.ps1 -useb | iex; fly launch --from https://github.com/sangjun121/java-pairmatching-precourse