Attempting to install AlexaPi on Hassio - Getting error: grep: unrecognized option: P

Running Hassio on a Raspberry Pi, trying to install AlexaPi from the following: https://github.com/alexa-pi/AlexaPi/wiki/Installation

Got step 1 done no problem, when running the install:

sudo ./AlexaPi/src/scripts/setup.sh

I receive the following:

➜  /opt sudo ./AlexaPi/src/scripts/setup.sh     
TIP: When there is a value in brackets like [default_value], hit Enter to use it.

Which operating system are you using?
         debian - Debian, Raspbian, Armbian, Ubuntu or other Debian-based
      archlinux - Arch Linux or Arch Linux-based
Your OS [debian]: **I HIT ENTER HERE**
Which device are you using?
grep: unrecognized option: P
BusyBox v1.27.2 (2017-11-28 16:17:36 GMT) multi-call binary.

Usage: grep [-HhnlLoqvsriwFE] [-m N] [-A/B/C N] PATTERN/-e PATTERN.../-f FILE [FILE]...

Search for PATTERN in FILEs (or stdin)

-H	Add 'filename:' prefix
-h	Do not add 'filename:' prefix
-n	Add 'line_no:' prefix
-l	Show only names of files that match
-L	Show only names of files that don't match
-c	Show only count of matching lines
-o	Show only the matching part of line
-q	Quiet. Return 0 if PATTERN is found, 1 otherwise
-v	Select non-matching lines
-s	Suppress open and read errors
-r	Recurse
-i	Ignore case
-w	Match whole words only
-x	Match whole lines only
-F	PATTERN is a literal (not regexp)
-E	PATTERN is an extended regexp
-m N	Match up to N times per file
-A N	Print N lines of trailing context
-B N	Print N lines of leading context
-C N	Same as '-A N -B N'
-e PTRN	Pattern to match
-f FILE	Read pattern from file

Anyone have success installing AlexaPi on Hassio?

You can’t install stuff inside hassio.

That’s a bummer. Might be worthwhile to swap to Hassbian and try it that way. Thanks for the info!

Hope you’re not thinking you can use that for controlling HA, it’s not a free echo.

That’s actually exactly what I was planning. Why won’t it work?