name: docker-base

on:
  push:
    branches:
      - main
    paths:
      - Dockerfile.base
      - Dockerfile

  schedule:
    # Run every week at 09:43 on Monday, Wednesday and Friday. We build this
    # frequently to ensure that packages are up-to-date.
    - cron: "43 9 * * 1,3,5"

  workflow_dispatch:

# Avoid running multiple jobs for the same commit.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}-docker-base

jobs:
  build:
    runs-on: ubuntu-latest
    if: github.repository_owner == 'coder'
    steps:
      - uses: actions/checkout@v3

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

      - name: Create empty base-build-context directory
        run: mkdir base-build-context

      - name: Install depot.dev CLI
        uses: depot/setup-action@v1

      # This uses OIDC authentication, so no auth variables are required.
      - name: Build base Docker image via depot.dev
        uses: depot/build-push-action@v1
        with:
          project: wl5hnrrkns
          context: base-build-context
          file: Dockerfile.base
          pull: true
          no-cache: true
          push: true
          tags: |
            ghcr.io/coder/coder-base:latest