main.yml

name: Build and Deploy

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

env:
  CARGO_TERM_COLOR: always
  IMAGE_NAME: ghcr.io/${{ github.repository }}:latest
  IMAGE_PATH: image.tar

jobs:
  # compilation job
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    # build the project
    - name: Build the project
      run: cargo build --release --verbose
    # upload neccesary build files as an artifact
    - name: Archive build artifacts
      uses: actions/upload-artifact@v3
      with:
        name: build-artifact
        path: |
          target/release/sport-challenge

  # building the image job
  container_build:
    # only run on main branch and not other branches/ pull-requests
    if: github.ref == 'refs/heads/main' 
    runs-on: ubuntu-latest
    needs: build
    steps:
    - uses: actions/checkout@v3
    # download the previously created build artifact
    - name: Download build artifact
      uses: actions/download-artifact@v3
      with:
        name: build-artifact
        path: target/release/
    # building the docker image
    - name: Build the Docker image
      run: |
        docker build . --file Dockerfile --tag $IMAGE_NAME
        docker save $IMAGE_NAME > image.tar
    # upload the docker image as an artifact
    - name: Archive container artifacts
      uses: actions/upload-artifact@v3
      with:
        name: container-image-artifact
        path: image.tar

  # deploying the image job
  container_deploy:
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    needs: container_build
    steps:
    - uses: actions/checkout@v3
    # download the previously created docker image
    - name: Download container artifact
      uses: actions/download-artifact@v3
      with:
        name: container-image-artifact
    # publish the image to GitHub packages
    - name: Publish the image
      run: |
        docker load < image.tar
        docker login --username ${{ github.repository_owner }} --password ${{ secrets.GH_PAT }} ghcr.io
        docker push $IMAGE_NAME