# This workflow will run whenever there is a change to the version of LLVM the project is based on
# It will create a new Docker image for the TravisCI build and push it to Docker Hub
# This image contains the prereqs for building onnx-mlir including a precompiled copy of the appropriate
# LLVM and MLIR code.
# 
# To make this work on your fork you need to enable the github workflow and set a personal access token for your
# docker hub account in the github secrets.
# When the action succeeds it will put the prereq image in your docker hub repository.

name: Build Docker Prereq Image

# Run this workflow when there is a change to clone-mlir.sh (that implies a new version of LLVM is being used)
on:
  push:
    paths:
    - 'utils/clone-mlir.sh'

jobs:
  # This workflow contains a single job called "build"
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
    - uses: actions/checkout@v2
    - name: build image on fork
      if: ! endsWith(github.ref, '/master')
      env:
        DOCKER_HUB_TOKEN: ${{ secrets.DOCKER_HUB_TOKEN }}
      run: |
        docker build --tag $GITHUB_ACTOR/onnx-mlir-llvmimage:initial -f $GITHUB_WORKSPACE/.github/workflows/prereq.Dockerfile $GITHUB_WORKSPACE/utils
        docker login -u $GITHUB_ACTOR -p "$DOCKER_HUB_TOKEN" 
        docker push $GITHUB_ACTOR/onnx-mlir-llvmimage:initial
    - name: build image on master
      if: endsWith(github.ref, '/master')
      run: |
        docker build --tag onnxmlirczar/onnx-mlir-llvmimage:initial -f $GITHUB_WORKSPACE/.github/workflows/prereq.Dockerfile $GITHUB_WORKSPACE/utils
        docker login -u onnxmlirczar -p "$DOCKER_HUB_TOKEN"
        docker push onnxmlirczar/onnx-mlir-llvmimage:initial