$ sudo apt-add-repository ppa:ubuntugis/ubuntugis-unstable
$ sudo apt-get update
$ sudo apt-get install libgdal-dev
$ sudo apt-get install python3-dev
$ sudo apt-get install gdal-bin python3-gdal

$ sudo apt-get install virtualenv

$ virtualenv env -p python3
$ source env/bin/activate

(env)$ pip3 install -r requirements.txt

(env)$ pip3 install GDAL==$(gdal-config --version) --global-option=build_ext --global-option="-I/usr/include/gdal"

mkdir data/
ls data/
    LC08_220069_20190213.tif
    LC08_220069_20190520.tif
    ...

(env)$ python3 main.py