Docker - how can I copy a file from an image to a host?

Question

My question is related to this question on copying files from containers to hosts; I have a Dockerfile that fetches dependencies, compiles a build artifact from source, and

Answer 1

You could bind a local path on the host to a path on the container, and then cp the desired file(s) to that path at the end of your script.

$ docker run -d \
  -it \
  --name devtest \
  --mount type=bind,source="$(pwd)"/target,target=/app \
  nginx:latest

Then there is no need to copy afterwards.