How to set a .js file running express as my main file

[luke]

HI, @therealkingnull. This should answer your question:

[Support Guide] Can I run a web server, HTTP listener, and/or database at Netlify?

Last reviewed by Netlify Support on December 2022 How do I run a server/database at Netlify? We often get questions about how to run a specific backend server or database at Netlify. Examples of these types of questions include: How to I get my node HTTP listener to respond to requests? How do I start Mongo/MySQL/<insert-some-database-here> running on the server? How can I SSH into my website? We are here today to answer these questions - and the answer is: you can’t! What do you m…