ZAC install should not presume you've got all the env vars in your shell

[dovholuknf]

see https://openziti.discourse.group/t/upating-admin-console-docs/1672

user tried to install ZAC first, but didn't realize ZITI_HOME kinda needs to be set, or else it'll try to make a directory at /ziti-console which will be owned exclusively by root and cause "trouble".

Make that clear and make the doc support installing zac by itself or just 'first'...

[qrkourier]

I agree.

I found the README in the console's project to work perfectly, and the ziti-doc quickstart for the console to be incomplete.

It seems best to point users to the authoritative build instructions rather than partially duplicating them in ziti-doc.

While the developer experience is wonderful, stepping through the console's readme instructions caused me to want a better non-Docker operator experience, i.e., a package or install script, e.g., pkg, nexe, or EncloseJS.

[qrkourier]

A user reported the quickstart console instructions don't work. While it's still unclear precisely what the root of the problem is, there's at least one omission that makes me thing the quickstart console instructions have drifted from the repo's build instructions, at least a little: https://github.com/openziti/ziti-console/issues/294.