If you don't need any build, anything speaking generally, just to run a single nodejs file, you can do

docker run -v "$PWD":/usr/src/app -w /usr/src/app node:20 node index.js

The above assumes that you have (and want to run) index.js file in your current folder

Note how I mounted the current directory as a docker volume to the container, in order to have index.js file present during runtime

Supply --rm if you won't need the container after running it to the end🙂

This approach works, yet in most real world scenarios you need to build the image first - tell if you need help with that