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With `docker run`, the Docker process receives Ctrl-C and forwards it to the container's PID 1 (which is commonly `test.sh`). Often this results in no or slow response during integration tests (when `test.sh` has a child Python process). With `docker run -it`, the Docker process creates a pseudo-tty. When the user types Ctrl-C, that goes through the pseudo-tty and is received by the whole "foreground process group", in other words both bash and Python. This results in faster shutdown on Ctrl-C. https://docs.docker.com/reference/cli/docker/container/run/#interactive https://docs.docker.com/reference/cli/docker/container/run/#tty https://www.gnu.org/software/bash/manual/html_node/Job-Control-Basics.html#Job-Control-Basics-1 https://stackoverflow.com/a/41099052
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With
docker run, the Docker process receives Ctrl-C and forwards it to the container's PID 1 (which is commonlytest.sh). Often this results in no or slow response during integration tests (whentest.shhas a child Python process).With
docker run -it, the Docker process creates a pseudo-tty. When the user types Ctrl-C, that goes through the pseudo-tty and is received by the whole "foreground process group", in other words both bash and Python. This results in faster shutdown on Ctrl-C.https://docs.docker.com/reference/cli/docker/container/run/#interactive https://docs.docker.com/reference/cli/docker/container/run/#tty
https://www.gnu.org/software/bash/manual/html_node/Job-Control-Basics.html#Job-Control-Basics-1 https://stackoverflow.com/a/41099052