Mattermost is an open-source, self-hostable online chat service with file sharing, search, and integrations. It is designed as an internal chat for organizations and companies, and mostly markets itself as an open-source alternative to Slack and Microsoft Teams. Team Edition is a free-to-use, open source, self-hosted collaboration platform offering all the core productivity benefits of competing SaaS solutions. It deploys as a single Linux binary with MySQL or PostgreSQL under an MIT license.
This is a companion discussion topic for the original entry at https://henrywithu.com/mattermost-docker-deployment/