Update README.md with Digital Ocean example

[JohnGUnderwood]

Resolves #610

Tested in the following action setup:

name: Build and Push

on:
  release:
    types: [published]

jobs:
  build_and_push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout the repo 
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: registry.digitalocean.com/junderwood/website
          
      - name: Login to DigitalOcean Container Registry
        uses: docker/login-action@v3
        with:
          registry: registry.digitalocean.com
          username: ${{ secrets.DIGITALOCEAN_USERNAME }}
          password: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}
          
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          file: ./Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

[crazy-max]

small nit otherwise LGTM, thanks!

[crazy-max]

Thanks, can you squash your commits please? Otherwise LGTM

[JohnGUnderwood]

I believe I merged those two commits correctly.

[crazy-max]

LGTM thanks!