build custom blocky image, add config and publish to ghcr

docker-image-build-publish.yml

name: Build

on:
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: sn0opy/blocky-container

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v3

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

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Set up Docker Build
        uses: docker/setup-buildx-action@v2

      - name: Build and push Docker image
        uses: docker/build-push-action@v3
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

FROM ghcr.io/0xerr0r/blocky:latest
ADD config.yml /app/config.yml
ADD allowlist.txt /app/allowlist.txt
ENTRYPOINT ["/app/blocky"]