This code is what was used in our blog posts on using R to make an API and using R with docker.
The three R files are used to create a simple API with the plumber R library. The dockerfile can be used to take the API and create a docker container with it.
To run the API directly, run the main.R script (or deploy the container). Then go to http://127.0.0.1/predict_petal_length?petal_width=1 to run the model on a petal width of 1.