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This is an underrated comment. If your project can run in Docker, providing a Dockerfile in addition to the README is incredibly valuable.

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I agree. I have provided Dockerfiles in work projects, and it was successful. However, I found it difficult to run tasks using just the Dockerfile. The containers became too large. And I had to write too long arguments for volume mounts and environment variables. In the end, I had to include the steps for starting and running the containers in the README.

(I am deeply concerned about this issue. So I implemented a little tool called Lask, and it tried to solve this kind problems. https://github.com/lask-task-runner/lask )

I forgot to mention it but a docker compose is even better to mitigate incantations. It seems every project I use that has a docker file also has some custom script around it that boils down to mounts and variables

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