docs: document local launch of the app using docker

README.md

@@ -13,4 +13,20 @@ duplicated_from: SpacesExamples/streamlit-docker-example
 
 Streamlit Docker Template is a template for creating a Streamlit app with Docker and Hugging Face Spaces.
 
-Code from https://docs.streamlit.io/library/get-started/create-an-app
+Code from https://docs.streamlit.io/library/get-started/create-an-app
+
+## Local execution ##
+
+You need *Docker* installed.
+On MacOSX we recommand using *colima* if you do not want to use *Docker Desktop* 
+for licensing reasons.
+
+* https://docs.docker.com/desktop/install/mac-install/
+* https://github.com/abiosoft/colima
+
+```shell
+$ colima start --cpu 4 --memory 16 --network-address # Adjust ressources as you wish
+$ docker build -t persistent-docker-space .
+$ docker run -it -p 8501:8501 persistent-docker-space:latest
+
+```