This is one of many solutions to the https://hackattic.com/challenges/dockerized_solutions

You will need a token to get the secret. You can get this token by logging in to the hackattic and visiting page. On this page, in the "Getting the problem set" section, you will see a GET request with the "access_token" parameter, get it.

You also, of course, need to have Docker and ... docker-compose (don't ask me, just coz) installed. And finally you'll need unzip installed, for unzip downloaded repository containing solution. Or you just can download .sh and .yml files manually

wget -qO main.zip https://github.com/Cookieees/DockerizedRegistry/archive/refs/heads/main.zip && unzip main.zip && cd DockerizedRegistry-main && sudo chmod +x ./getSecret.sh && bash ./getSecret.sh

Please note that currently it is not possible to get the secret, due to errors on the resolver server (HTTP500)