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[](https://app.codecrafters.io/users/codecrafters-bot?r=2qF)
This is a starting point for Go solutions to the
["Build Your Own Docker" Challenge](https://codecrafters.io/challenges/docker).
In this challenge, you'll build a program that can pull an image from
[Docker Hub](https://hub.docker.com/) and execute commands in it. Along the way,
we'll learn about [chroot](https://en.wikipedia.org/wiki/Chroot),
[kernel namespaces](https://en.wikipedia.org/wiki/Linux_namespaces), the
[docker registry API](https://docs.docker.com/registry/spec/api/) and much more.
**Note**: If you're viewing this repo on GitHub, head over to
[codecrafters.io](https://codecrafters.io) to try the challenge.
# Passing the first stage
The entry point for your Docker implementation is `app/main.go`. Study and
uncomment the relevant code, and push your changes to pass the first stage:
```sh
git add .
git commit -m "pass 1st stage" # any msg
git push origin master
```
That's all!
# Stage 2 & beyond
Note: This section is for stages 2 and beyond.
You'll use linux-specific syscalls in this challenge. so we'll run your code
_inside_ a Docker container.
Please ensure you have [Docker installed](https://docs.docker.com/get-docker/)
locally.
Next, add a [shell alias](https://shapeshed.com/unix-alias/):
```sh
alias mydocker='docker build -t mydocker . && docker run --cap-add="SYS_ADMIN" mydocker'
```
(The `--cap-add="SYS_ADMIN"` flag is required to create
[PID Namespaces](https://man7.org/linux/man-pages/man7/pid_namespaces.7.html))
You can now execute your program like this:
```sh
mydocker run alpine:latest /usr/local/bin/docker-explorer echo hey
```
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