Can't bypass the install prompt for Docker build

[roborourke]

Hi, I'm trying to use this as part of a docker build but nothing I've tried seems to work to bypass input to the cargo-php install command programmatically.

It would help to have an option on cargo-php install like --yes | -y to bypass the prompt.

I've tried echo "y" | cargo-php install, cargo-php install <<< $'yes\n' etc but not luck.