Earthly is participating in Hacktoberfest, an annual event organized by DigitalOcean to promote open-source contributions, by offering additional incentives to participants. During the event, which runs from October 1 to November 1, contributors who submit at least one accepted pull request to Earthly's GitHub Repository can receive an Earthly sticker, with the first 40 participants being eligible. Additionally, participants can qualify for a sticker by adding a functional Earthfile to any open-source project, including personal ones. Earthly, a free and open build tool that uses containers, encourages contributors to join its Slack channel for support and discussion.