fix checking for docker compose command in install.sh #1499
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🔍 Why Not Just command -v "docker compose"?
Because docker compose is not a standalone command, it's a subcommand of the docker binary.
docker compose is part of the Docker CLI.
command -v only works for standalone binaries (like docker, ls, curl).
So to test if the subcommand exists, you try running it and check the return status