You need users first. Users become contributors. Some contributors become long term contributors. To get an initial user base I'd recommend following this check

You need users first. Users become contributors. Some contributors become long term contributors. To get an initial user base I'd recommend following this checklist I've created: https://github.com/amilajack/project-checklist https://github.com/amilajack/project-checklist. Also replying quickly to issue requests helps retain users over time, which indirectly increases the number of people that become contribute over time.