Version 1.0.0
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Erlang Example

This guide covers configuring continuous integration pipelines for Erlang projects. If you’re new to Drone please read our Tutorial and build configuration guides first.

Build and Test

In the below example we demonstrate a pipeline that executes rebar commands. These commands are executed inside the Erlang Docker container, downloaded at runtime from DockerHub.

kind: pipeline
name: default

steps:
- name: test
  image: erlang:21
  commands:
  - rebar get-deps
  - rebar compile
  - rebar skip_deps=true eunit

Please note that you can use any Docker image in your pipeline from any Docker registry. You can use the official Erlang images, or your can bring your own.

Test Multiple Versions

You can use Drone’s multi-pipeline feature to concurrently test against multiple versions of Erlang. This is equivalent to matrix capabilities found in other continuous integration systems.

---
kind: pipeline
name: erlang21

steps:
- name: test
  image: erlang:21
  commands:
  - rebar get-deps
  - rebar compile
  - rebar skip_deps=true eunit

---
kind: pipeline
name: erlang20

steps:
- name: test
  image: erlang:20
  commands:
  - rebar get-deps
  - rebar compile
  - rebar skip_deps=true eunit

...

If you find this syntax too verobse we recommend using jsonnet. If you are unfamiliar with jsonnet please read our guide.

local Pipeline(version) = {
  kind: "pipeline",
  name: "erlang"+version,
  steps: [
    {
      name: "test",
      image: "erlang:"+version,
      commands: [
        "rebar get-deps",
        "rebar compile",
        "rebar skip_deps=true eunit",
      ]
    }
  ]
};

[
  Pipeline("21"),
  Pipeline("20"),
  Pipeline("19"),
  Pipeline("18"),
]

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