Fix docker detection. #755
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Alexhuszagh
commented
Jun 4, 2022
| let runner = config.runner(target)?; | ||
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| let mut docker = docker_command("run")?; | ||
| let is_docker = get_is_docker(get_container_engine().unwrap(), verbose)?; |
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Note that this can't fail due to the above command: docker_command ensures that get_container_engine is not an error.
Alexhuszagh
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Currently, docker detection fails under a few cases: 1. If `podman_docker` is installed, so the filename is docker but the actual executable is podman. 2. If the executable has a suffix, such as `.exe` on Windows, because we check if the executable `ends_with(DOCKER)`. The only reliable way to fix both these issues, IE, if the actual engine is docker and not an alias, and if the executable does not contain a suffix, is to query the container engine. This might not be ideal for performance reasons, but is the only reliable way to fix these issues. Emulated docker will have an output of `Emulate Docker CLI using podman.`, while docker itself will have an output similar to `Docker version 20.10.16, build aa7e414`. Closes cross-rs#530. Closes cross-rs#538.
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Currently, docker detection fails under a few cases:
podman_dockeris installed, so the filename is docker but the actual executable is podman..exeon Windows, because we check if the executableends_with(DOCKER).The only reliable way to fix both these issues, IE, if the actual engine is docker and not an alias, and if the executable does not contain a suffix, is to query the container engine. This might not be ideal for performance reasons, but is the only reliable way to fix these issues.
Closes #530.
Closes #538.