Docker for Developers: Essential Commands in One Cheatsheet

  From host to container:
  docker cp ./local/file.txt container:/app/

It's cruel to use the word container in a "cheatsheet" when it's actually a placeholder. Using ${container_id_or_name}:/app would make it more obvious and would actually error out if the user attempts to copy-paste

In the spirit of being helpful, this is also good fun (but I think it does require a copy of /bin/tar in the image):

  tar -cf - my-dir my/file.txt | docker cp - ${container_id}:/my/dest/

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the "-e" also has two different syntaxes, depending on if one needs to rename the variable as it goes into the container:

  export AWS_ACCESS_KEY_ID
  docker run -e AWS_ACCESS_KEY_ID my.image

  # versus

  docker run -e AWS_KEY=$AWS_ACCESS_KEY_ID my.image

The docker-compose syntax ist valid for compose/v1 which was last updated in 2021. yet this article is from 2025. is vibe-docing now a thing also?

I kinda wish that it was an actual printable cheatsheet and not just a list of commands on a website that I have to bookmark and hope it's still up in a year.