Posted inDocker
Dockerize Elixir Phoenix: Multi-stage Build, OTP Releases, and Production-Ready Erlang Clustering
A detailed guide to Dockerizing Elixir Phoenix with an optimized multi-stage build that reduces image size from 1.2GB to 85MB, production-ready OTP Releases configuration, and automatic Erlang clustering via libcluster DNS in Docker Compose. Includes a real-world Dockerfile, clustering configuration, and a deploy script with safe database migrations.