name: Build experimental image on branch

on:
  push:
    branches:
      - master
      - v*

jobs:

  experimental:
    if: github.repository == 'traefik/traefik'
    name: Build experimental image on branch
    runs-on: ubuntu-20.04

    steps:

      # https://github.com/marketplace/actions/checkout
      - name: Check out code
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Branch name
        run: echo ${GITHUB_REF##*/}

      - name: Build docker experimental image
        run: docker build -t traefik/traefik:experimental-${GITHUB_REF##*/} -f exp.Dockerfile .

      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Push to Docker Hub
        run: docker push traefik/traefik:experimental-${GITHUB_REF##*/}