check for missing python when using pyenv

README.md

@@ -29,7 +29,7 @@ The main things you will need to run and build OpenPype are:
     - PowerShell 5.0+ (Windows)
     - Bash (Linux)
 - [**Python 3.7.8**](#python) or higher
-- [**MongoDB**](#database)
+- [**MongoDB**](#database) (needed only for local development)
 
 
 It can be built and ran on all common platforms. We develop and test on the following:
@@ -126,6 +126,16 @@ pyenv local 3.7.9
 
 ### Linux
 
+#### Docker
+Easiest way to build OpenPype on Linux is using [Docker](https://www.docker.com/). Just run:
+
+```sh
+sudo ./tools/docker_build.sh
+```
+
+If all is successful, you'll find built OpenPype in `./build/` folder.
+
+#### Manual build
 You will need [Python 3.7](https://www.python.org/downloads/) and [git](https://git-scm.com/downloads). You'll also need [curl](https://curl.se) on systems that doesn't have one preinstalled.
 
 To build Python related stuff, you need Python header files installed (`python3-dev` on Ubuntu for example).
@@ -133,7 +143,6 @@ To build Python related stuff, you need Python header files installed (`python3-
 You'll need also other tools to build
 some OpenPype dependencies like [CMake](https://cmake.org/). Python 3 should be part of all modern distributions. You can use your package manager to install **git** and **cmake**.
 
-
 <details>
 <summary>Details for Ubuntu</summary>
 Install git, cmake and curl

tools/create_env.ps1

@@ -50,8 +50,18 @@ function Install-Poetry() {
     Write-Host "Installing Poetry ... "
     $python = "python"
     if (Get-Command "pyenv" -ErrorAction SilentlyContinue) {
+        if (-not (Test-Path -PathType Leaf -Path "$($openpype_root)\.python-version")) {
+            $result = & pyenv global
+            if ($result -eq "no global version configured") {
+                Write-Host "!!! " -NoNewline -ForegroundColor Red
+                Write-Host "Using pyenv but having no local or global version of Python set."
+                Exit-WithCode 1
+            }
+        }
         $python = & pyenv which python
+        
     }
+
     $env:POETRY_HOME="$openpype_root\.poetry"
     (Invoke-WebRequest -Uri https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py -UseBasicParsing).Content | & $($python) -
 }