I think these type of posts are more suitable either on your profile, you can create tutorials, articles, ecc, but best on twitter and similar, if you can create videos youtube is also a good place to do it. There is an audience for people following and watching indie(usually) developers working on their games.
Doing the above will give you two advantages, first you are more likely to find other developers that are interested in the Linux+Unreal development and you can build a potential player base that could end up purchasing the game when it will be released (or support you on patreon)
you can still ask questions here obviously about specific issues or tasks you want to know more about, because this is the main purpose of this forum 