build.yml

name: "Build & Push to Docker Hub"

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]
    
env:
  tarball_name: rtcp.tar.gz
    
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2.4.0
    - uses: cachix/install-nix-action@v20
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: cachix/cachix-action@v12
      with:
        name: myme
        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
    - name: Build Docker image
      run: nix build -o ${{ env.tarball_name }}
    - name: Archive Docker Image
      uses: actions/upload-artifact@v3
      with:
        name: docker-image
        path: ${{ env.tarball_name }}
      
  push:
    needs: [build]
    runs-on: ubuntu-latest
    if: github.event_name == 'push'
    steps:
      - name: Download Docker Image
        uses: actions/download-artifact@v3
        with:
          name: docker-image
      -
        name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
      -
        name: Push image to Docker Hub
        run: |
          docker load < ${{ env.tarball_name }}
          docker tag rtcp:latest myme/rtcp:latest
          docker push myme/rtcp:latest