devcontainer_build_publish.yml

name: Build and Publish Dev Container

on:
  workflow_dispatch: # Manually trigger a workflow run using the GitHub API, GitHub CLI, or the GitHub UI.
  push:
    branches:
      - main
    paths:
      - .devcontainer/*
      - .python-version
      - pyproject.toml
  schedule:
    - cron: '30 15 10 * *'

permissions:
  contents: read
  packages: write

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}-dev-container

jobs:
  build-and-publish:
    if: github.repository == 'UCREL/pymusas'

    runs-on: ubuntu-latest

    steps:
      - name: Lower case image name
        run: |
          LOWER_IMAGE_NAME=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')
          echo "LOWER_IMAGE_NAME=$LOWER_IMAGE_NAME" >> $GITHUB_ENV
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.02

      - name: Login to GitHub Container Registry
        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Pre-build dev container image
        uses: devcontainers/ci@b63b30de439b47a52267f241112c5b453b673db5 # v0.3.1900000449
        with:
          imageName: ${{ env.REGISTRY }}/${{ env.LOWER_IMAGE_NAME }}
          cacheFrom: ${{ env.REGISTRY }}/${{ env.LOWER_IMAGE_NAME }}
          push: always