Add NVIDIA Container Toolkit to installation instructions

README.md

@@ -5,7 +5,7 @@ was developed as a part of [the AHISTO TACR Eta grant project][7], number TL0300
 
 To install the tool, perform the following steps:
 
-1. [Install Python][4] and [Docker][5].
+1. [Install Python][4], [Docker][5], and [NVIDIA Container Toolkit][9].
 2. Run `make build` from the command line to build the Docker images required by the tool.
 3. [Create and activate a Python virtualenv][6] and run `make install` from the command line to install the tool.
 
@@ -55,3 +55,4 @@ from [the RASLAN 2021 article When Tesseract Brings Friends][3] is available in
  [6]: https://docs.python.org/3/library/venv.html
  [7]: https://starfos.tacr.cz/en/project/TL03000365
  [8]: https://nlp.fi.muni.cz/raslan/2020/paper1.pdf
+ [9]: https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/install-guide.html#docker