How to install dbt in a virtual environment

dbt installation guide:

The dbt package will be installed into a python virtual environment. This way we can install different version of dbt (or python) on your computer and check if the project still works or where it breaks. So whenever installing a new version of dbt, create a new virtual environment and install the dbt package in it.

I used Ubuntu 18.04 to install the dbt version 0.16.1 and virtualenv. First we will install virtualenv to have a clean isolated environment
Install virtualenv
```
sudo apt install virtualenv
```
Create Virtual Environment
```
python3 -m venv vm_dbt_package
```
Login to your virtual environment. First enter your VM directory
```
cd vm_dbt_package
```
Then activate the VM with the command
```
source bin/activate
```
Upgrade pip in your virtual environment
```
pip install --upgrade pip
```
It might be necessary to install or upgrade your setuptools package as well
```
pip install --upgrade setuptools
```
Now try to install dbt
```
pip install dbt
```
Check the dbt version
```
dbt --version
```
After the installation of dbt you can check which packages have been installed in your virtual environment
```
pip list
```

You should see now several dbt packages and other python packages.