update_latest.yaml

name: Update latest tag to latest release

on:
  workflow_dispatch:
  schedule:
    - cron: '0 18 * * *'

jobs:
  update_latest:
    name: "Update latest tag"
    strategy:
      fail-fast: false
      matrix:
        image: ['r-ver', 'bioconductor', 'bioconductor_docker', 'tidyverse', 'ml-verse', 'shiny']
    runs-on: ubuntu-latest
    steps:
    - name: Set defaults for schedule
      id: defs
      run: |
        OWNER_REPO="bioconductor"
        echo repo="$OWNER_REPO"  >> $GITHUB_OUTPUT
        echo releasetag=$(curl https://hub.docker.com/v2/repositories/$OWNER_REPO/${{matrix.image}}/tags?page_size=1000 | jq '.results[].name' | tr -d '"' | grep -v "-" | sort -n | grep RELEASE | tail -n 1)  >> $GITHUB_OUTPUT

    - name: Login to GHCR
      uses: docker/login-action@v2
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Login to Dockerhub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

    - name: Update latest tag
      run: |
        OWNER_REPO="${{steps.defs.outputs.repo}}"
        docker pull $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}}
        docker pull $OWNER_REPO/${{matrix.image}}:latest
        IMAGEDIFF=$(diff <(docker inspect $OWNER_REPO/${{matrix.image}}:latest) <(docker inspect $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}}))
        if [ -z "$IMAGEDIFF" ]; then
          echo '"latest" tag is already "${{steps.defs.outputs.releasetag}}"'
        else
          docker tag $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}} $OWNER_REPO/${{matrix.image}}:latest
          docker push $OWNER_REPO/${{matrix.image}}:latest
          docker tag $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}} ghcr.io/$OWNER_REPO/${{matrix.image}}:latest
          docker push ghcr.io/$OWNER_REPO/${{matrix.image}}:latest
        fi