Defacto's Elixir base images

Docker images based on hex.pm's Elixir images.

Included:

• Erlang
• Elixir
• NodeJS
• ImageMagick
• Some build tools (for dependencies that require compilation steps)

Adding a new version

1. Create a new directory named after the Elixir version (e.g. 1.20.0-rc.6/) containing a Dockerfile.
2. Open a PR — the Build and publish workflow builds the image to verify the Dockerfile compiles.
3. On merge to master, the workflow pushes the image to Docker Hub as defactosoftware/elixir:<version>.

Required Docker Hub secrets

The publish workflow needs two repository secrets configured in Settings → Secrets and variables → Actions:

• DOCKERHUB_USERNAME — a Docker Hub account with push access to defactosoftware/elixir
• DOCKERHUB_TOKEN — a Docker Hub access token (create one at https://hub.docker.com/settings/security)

Building locally

If you need to build the image on your machine (e.g. to test ahead of pushing):

cd VERSION
docker build --platform=linux/amd64 -t defactosoftware/elixir:VERSION .
docker push defactosoftware/elixir:VERSION   # optional

Docker Desktop, Colima, OrbStack and Podman all work — anything that provides a docker CLI with buildx.