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Michael Zhang 2023-03-29 23:38:50 -05:00
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content/posts/2023-03-29-shell-in-docker-compose-container-without-shell.md
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@ -6,9 +6,12 @@ tags = ["docker", "linux"]
Here is a rather dumb way of entering a Docker Compose container that didn't Here is a rather dumb way of entering a Docker Compose container that didn't
have a shell. In this specific case, I was trying to enter a Woodpecker CI have a shell. In this specific case, I was trying to enter a Woodpecker CI
container without exiting it. These are my specific steps for running it, please container without exiting it. Some Docker containers are incredibly stripped
replace the paths and container names with the ones relevant to your specific down to optimize away bloat (which is good!) but this may make debugging them
use-case. relatively annoying.
> These are my specific steps for running it, please replace the paths and
> container names with the ones relevant to your specific use-case.
At first, I tried an approach following [this][1] document. But once I got to At first, I tried an approach following [this][1] document. But once I got to
actually running commands within the namespace, I realized that this exposes the actually running commands within the namespace, I realized that this exposes the
@ -20,7 +23,8 @@ need to get some shell into the container.
Fortunately, there's a software that contains a lot of handy tools in one Fortunately, there's a software that contains a lot of handy tools in one
binary: [busybox][2]. It's a GPL software that contains a small implementation binary: [busybox][2]. It's a GPL software that contains a small implementation
of a bunch of typical Unix utilities in a single static binary. of some coreutils (the Unix utilities like `ls` and `cp`) in a single static
binary.
[2]: https://busybox.net/ [2]: https://busybox.net/