Can you share the equivalent cli command? I would share it in the article
docker run -v `pwd`:/app -p 8900:8900 node:12 sh -c "npm install && npm start"
In general, even though it might sound rude, but docs.docker.com/engine/reference/c... is pretty exhaustive and should be read first.
Nevertheless your approach to go for a docker compose solution helps to make it better portable also for other users/developer of your code.
Thank you for covering for me! I only just saw the reply comment. In addition to that you will need -w /app to change the working directory.
For completeness for anyone else reading,
sh -c "..."
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