niku/codecrafters-docker-rust
niku/codecrafters-docker-rust
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Paul Kuruvilla 2022-02-09 20:42:15 +00:00
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@ -12,7 +12,7 @@ we'll learn about [chroot](https://en.wikipedia.org/wiki/Chroot),
# Passing the first stage # Passing the first stage
The entry point for your Docker implementation is in `src/main.rs`. Study and The entry point for your Docker implementation is `src/main.rs`. Study and
uncomment the relevant code, and push your changes to pass the first stage: uncomment the relevant code, and push your changes to pass the first stage:
```sh ```sh
@ -31,26 +31,18 @@ That's all!
1. Commit your changes and run `git push origin master` to submit your solution 1. Commit your changes and run `git push origin master` to submit your solution
to CodeCrafters. Test output will be streamed to your terminal. to CodeCrafters. Test output will be streamed to your terminal.
# Running your program locally ### Running your program locally
Since you'll need to use linux-specific syscalls in this challenge, we'll run Since you'll need to use linux-specific syscalls in this challenge, we'll run
your code _inside_ a docker container. your code _inside_ a Docker container.
```sh Start by adding a [shell alias](https://shapeshed.com/unix-alias/):
docker build -t my_docker . && docker run --cap-add="SYS_ADMIN" my_docker run some_image /usr/local/bin/docker-explorer echo hey
```
(The `--cap-add="SYS_ADMIN"` flag is required to create
[PID Namespaces](https://man7.org/linux/man-pages/man7/pid_namespaces.7.html))
To make this easier to type out, you could add a
[shell alias](https://shapeshed.com/unix-alias/):
```sh ```sh
alias mydocker='docker build -t mydocker . && docker run --cap-add="SYS_ADMIN" mydocker' alias mydocker='docker build -t mydocker . && docker run --cap-add="SYS_ADMIN" mydocker'
``` ```
You can then execute your program like this: You can now execute your program like this:
```sh ```sh
mydocker run ubuntu:latest /usr/local/bin/docker-explorer echo hey mydocker run ubuntu:latest /usr/local/bin/docker-explorer echo hey