docker-image.yml

name: Docker Image CI

on:
  workflow_dispatch:
  push:
    branches: [ "main", "staging", "dev" ]
  pull_request:
    branches: [ "main" ]

permissions:
  contents: read
  packages: write

env:
  IMAGE_NAME: ghcr.io/sprocketbot/elo-service

jobs:

  build:

    runs-on: ubuntu-latest

    steps:
    - name: Check out repository
      uses: actions/checkout@v4

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2

    - name: Log in to GitHub Container Registry
      if: github.event_name != 'pull_request'
      uses: docker/login-action@v2
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract image tag
      shell: bash
      run: |
        raw_ref="${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}"
        safe_tag="$(echo "$raw_ref" | tr '[:upper:]' '[:lower:]' | sed 's|[^a-z0-9._-]|-|g')"
        echo "branch=$safe_tag" >> "$GITHUB_OUTPUT"
      id: extract_branch

    - name: Build And Push Image
      uses: docker/build-push-action@v3
      with:
        push: ${{ github.event_name != 'pull_request' }}
        tags: ${{ env.IMAGE_NAME }}:${{ steps.extract_branch.outputs.branch }}
        platforms: linux/amd64