What is a Mix release for Phoenix apps?

Mix release bundles your Elixir/Phoenix app with Erlang VM into a single binary—no Elixir install needed on servers. Runs anywhere Linux matches.

How do I deploy Phoenix to Hetzner with GitHub Actions?

Use this YAML: test job with Postgres container, build job rsyncs release, SSH runs migrations/restart. Secrets for SSH key/IP. Trigger on release publish.

Does GitHub Actions work for Elixir on Ubuntu VPS?

Yes—erlef/setup-beam handles Elixir/OTP. Ubuntu 24.04 runner matches Hetzner perfectly. Self-contained rels avoid arch issues.

⚙️ DevOps & Platform Eng

GitHub Actions: Effortless Phoenix Deploys to Hetzner VPS, No Local Builds Needed

Ever botched a deploy because your laptop's Arch Linux clashed with Ubuntu? One dev's GitHub Actions fix turns Phoenix Mix releases into smoothly Hetzner pushes.

theAIcatchup Apr 11, 2026 3 min read

GitHub Actions workflow diagram deploying Phoenix app binary to Hetzner server via rsync

⚡ Key Takeaways

GitHub Actions + Mix releases eliminate local build mismatches for Phoenix on Hetzner VPS. 𝕏
Self-contained binaries mean no Elixir/OTP on servers—rsync, migrate, restart in one flow. 𝕏
Cheap Hetzner CX23 handles app + Postgres; scales to edge deploys like early web browsers did apps. 𝕏

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theAIcatchup

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#Elixir Mix releases #GitHub Actions #Hetzner VPS #Phoenix deployment

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