The discrepancies between supply and demand curves are missing away.

wget https://get.symfony.com/cli/installer -O - | bash

supports only bash, and replacing executor with $SHELL variable makes no sense, because it gives no results in general.

zsh: = not found

So, not to waste time with the installer, a direct binary download can be used.

If you prefer, you can download the binaries directly from GitHub: 32-bit or 64-bit platforms.

To begin with, a micro service can be used as and advance stage: