Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
fix(run-docker.sh): Fix docker exec not passing kill signals (ctrl+c)…
… to commands in some cases leaving processes still running If `--tty` is not passed to `docker exec` because stdout is not available (`[ ! -t 1 ]`), like due to redirection to file (`&> build.log`) or if stdin is not available (`< /dev/null`), then docker does not forward kill signals to the process started and they remain running. To fix the issue, the `DOCKER_EXEC_PID_FILE_PATH` env variable with the value `/tmp/docker-exec-pid-<timestamp>` is passed to the process called with `docke exec` and the process started stores its pid in the file path passed. Traps are set in `run-docker.sh` that runs the `docker exec` command to receive any kills signals, and if it does, it runs another `docker exec` command to read the pid of the process previously started from `DOCKER_EXEC_PID_FILE_PATH` and then kills it and all its children. See Also: docker/cli#2607 moby/moby#9098 moby/moby#41548 https://stackoverflow.com/questions/41097652/how-to-fix-ctrlc-inside-a-docker-container Also passing `--init` to `docker run` to "Run an init inside the container that forwards signals and reaps processes", although it does not work for above cases, but may helpful in others. The `--init` flag changes will only engage on new container creation. https://docs.docker.com/engine/reference/run/#specify-an-init-process https://docs.docker.com/engine/reference/commandline/run/ ``` ./scripts/run-docker.sh ./build-package.sh -f libjpeg-turbo &> build.log ^C $ ./scripts/run-docker.sh ps -efww Running container 'termux-package-builder' from image 'termux/package-builder'... UID PID PPID C STIME TTY TIME CMD builder 1 0 0 05:48 pts/0 00:00:00 bash builder 9243 0 0 06:01 pts/1 00:00:00 bash builder 28127 0 0 06:12 ? 00:00:00 /bin/bash ./build-package.sh -f libjpeg-turbo builder 28141 28127 0 06:12 ? 00:00:00 /bin/bash ./build-package.sh -f libjpeg-turbo builder 28449 28141 1 06:12 ? 00:00:00 ninja -w dupbuild=warn -j 8 builder 28656 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28657 28656 79 06:12 ? 00:00:01 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28694 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28695 28694 89 06:12 ? 00:00:00 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28728 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28729 28728 0 06:12 ? 00:00:00 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28731 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28734 28731 0 06:12 ? 00:00:00 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28740 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28741 28740 0 06:12 ? 00:00:00 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28744 0 0 06:12 pts/2 00:00:00 ps -efww builder 28748 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28752 28748 0 06:12 ? 00:00:00 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28753 28449 0 06:12 ? 00:00:00 /bin/sh -c /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28754 28753 0 06:12 ? 00:00:00 /home/builder/.termux-build/_cache/android-r23c-api-24-v0/bin/clang builder 28755 28449 0 06:12 ? 00:00:00 ninja -w dupbuild=warn -j 8 $ ./scripts/run-docker.sh ./build-package.sh -f libjpeg-turbo &> build.log $ ./scripts/run-docker.sh ./build-package.sh -f libjpeg-turbo Running container 'termux-package-builder' from image 'termux/package-builder'... ERROR: Another build is already running within same environment. ```
- Loading branch information