hypothetical situation

Let’s say I have a simple website, let’s call it the mothership-website (for no particular reason). On this website, I allow anyone to download some program that I wrote myself and licensed under a public license. This program could be used to emulate a game server for a game I like to play, and include detailed instructions for the setup, but wouldn’t include any client files as those are owned by the game company and redistributing them would be copyright infringement.

Now, let’s say there was a second website, let’s call it the shadow-website (also for no particular reason), and this website (which is not controlled by me but by some mysterious unknown individual) was using my publicly available server-emulator to host a game server and was offering the download of a matching version of the copyrighted game files owned by the game company, thereby engaging in copyright infringement. And let’s say, even though the shadow-website receives DMCA takedowns, it keeps popping up under a different domain.

If that were the case, I would like to spread awareness of the shadow-website and the project behind it (to protect users and to combat copyright infringement of course, just like r/piracy does with its megathread). I would like to add a list such as this one to the front page of the website:

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Projects
Awesome Community Server

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my question

What exactly would I have to do to be legally allowed to include this list on the mothership-website? I wouldn’t want to risk the mothership-website becoming subject to DMCA takedown requests, as this would harm my intentions of building a community around it.

In other words; what exactly is it that makes it legal for r/piracy to list various copyright infringing resources in its megathread, and how could I do the same on my website?

PS: I am posting this here, because reddit told me I didn’t have enough “Karma” to post on r/Piracy