RSelenium with Docker. Error in checkError(res)

Following documentation online for using RSelenium with Docker, I have installed Docker Toolbox and RSelenium.

In the Docker Toolbox, I run

$ docker run -d -p 4445:4445 selenium/standalone-chrome 

and

$ docker ps, 

and get the following output.

Then, I run the following in R:

library(RSelenium) library(Rvest) #not sure if I need this? #192.168.99.100 is my IP remDr <- RSelenium::remoteDriver(remoteServerAddr = "192.168.99.100", port = 4445L) remDr$open() 

but I get the error

Error in checkError(res) : Undefined error in httr call. httr output: Failed to connect to 192.168.99.100 port 4445: Connection refused 

In Kitematic, I see this:

The only things I can think of that is causing this, is that I'm not using Toolbox correctly (need Docker for Windows instead), or that the default path in the path argument to remoteDriver() is not right.

I am running on Windows machine, but don't have Windows 10 pro.

Anyone got any thoughts?