docker-nextjs-registry-cache-ghcr.yml

name: Docker - NextJS GHCR registry cache
on:
  workflow_dispatch:
  push:
    branches:
      ## GitHub Actions need '**' to match branches with '/' in their name
      - '**'
    paths:
      - "nextjs-blog/**"
    tags:
      - '*'
  pull_request:
    branches:
      - 'main'

permissions:
  id-token: write
  contents: read
  packages: write

defaults:
  run:
    shell: bash

run-name: ${{ github.workflow }} by @${{ github.actor }} from ${{ github.ref_name }}

jobs:
  build:
    name: Build and Push Image
    runs-on: ubuntu-latest
    env:
      DOCKER_REGISTRY: ghcr.io
      DOCKER_IMAGE_NAME: deptagency/nextjs-blog

    steps:
      -
        name: Check out code
        uses: actions/checkout@v3

      -
        name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.DOCKER_REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      -
        name: Docker meta
        id: dockermeta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.DOCKER_REGISTRY }}/${{ env.DOCKER_IMAGE_NAME }}

      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          version: latest
          driver-opts: image=moby/buildkit:latest

      -
        name: Build Tag and Push Docker image
        uses: docker/build-push-action@v4
        with:
          file: nextjs-blog/docker/Dockerfile
          context: nextjs-blog
          tags: ${{ steps.dockermeta.outputs.tags }}
          labels: ${{ steps.dockermeta.outputs.labels }}
          pull: true
          push: true
          cache-from: type=registry,ref=${{ env.DOCKER_REGISTRY }}/${{ env.DOCKER_IMAGE_NAME }}:dockercache
          cache-to: type=registry,ref=${{ env.DOCKER_REGISTRY }}/${{ env.DOCKER_IMAGE_NAME }}:dockercache,mode=max,image-manifest=true