Running CI on Github

We develop and test our CI pipeline with Earthly, then we can create a Github Action to trigger our earthly build.

Create a file .github/workflows/ci.yml and add the following

Github Action

name: CI

on:
  push:
    branches: 
      - main
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    env:
      FORCE_COLOR: 1
    steps:
    - uses: earthly/actions/setup-earthly@v1
      with:
        version: v0.6.0
    - uses: actions/checkout@v2

    - name: Put back the git branch into git (Earthly uses it for tagging)
      run: |
        branch=""
        if [ -n "$GITHUB_HEAD_REF" ]; then
          branch="$GITHUB_HEAD_REF"
        else
          branch="${GITHUB_REF##*/}"
        fi
        git checkout -b "$branch" || true

    - name: Log in to the Container registry
      uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Earthly version
      run: earthly --version

    - name: Run build
      # Allow privelaged is required to run docker in docker
      run: earthly --allow-privileged +all

    - name: Tag and Push Images
      run: |
        docker tag rustonnails/app ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
        docker tag rustonnails/app-migrations ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}-migrations
        docker push ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:latest
        docker push ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}-migrations:latest

This will run our earthly build and push our docker images to the Github Container Registry.

The images will be renamed to match your Github organisation and project.

Packages

The screenshot below shows how your Github repo should look after the pipeline has run.