Dockerize is an Elixir package that helps you create Docker images from Elixir projects.
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- Elixir >= 1.9
mix archive.install hex dockerize
1. Generate configurations from template
Run this command in your project directory:
2. Build your docker image
docker build, for example
docker build . # or optionally run with buildkit: # DOCKER_BUILDKIT=1 docker build .
Now you are free to do anything with the docker image built, either run it locally or host it on your infrastructures, e.g a Kubernete cluster.
For more information of
docker build, please refer to the official document.
Phoenix projects without assets
By default, it speculates if it's running in a phoenix project or not, by information from
Mix.Project.config(). So basically you have to do nothing specially. But if your phoenix project doesn't have assets, you could use the
--no-phoenix-assets parameter on generating the
Use different app name other than directory name
By default, it speculates app_name from the directory name. You can change it by:
mix dockerize.init --app my_app
use MIX_ENV other than
By default, it build the image with
MIX_ENV=prod. You can change
MIX_ENV value by providing it as an build argument:
docker build --build-arg mix_env=dev .
use HEX_MIRROR other than default (https://repo.hex.pm)
If you are in China, you may want to use some hex mirror:
docker build --build-arg hex_mirror_url=https://hexpm.upyun.com .
Docker images underhood
There are two base docker images used:
- A build-time environment
- Used for building the final minimum docker image to distribute.
- Suitable for CI/CD uses.