Move ghost blog to ubuntu

I've decided to stop using Vultr's VM due to a poor experience and will migrate my blog to a new VM on DigitalOcean. Luckily, since the blog runs entirely on Docker and stores data in volumes, I only need to export these volumes and import them to resolve the issue. Here are the steps:

1. Upload compose.yml and ghost.config.json to the new VM.

2. On the old machine, export data from the ghostdb and ghostdata volumes:

   docker run --rm -v root_ghostdb:/data -v $(pwd):/backup alpine tar czf /backup/ghostdb.tar.gz -C /data .
   docker run --rm -v root_ghostdata:/data -v $(pwd):/backup alpine tar czf /backup/ghostdata.tar.gz -C /data .
   

3. On the new VM, import the data for both volumes:

   docker run --rm -v ghost_ghostdata:/data -v $(pwd):/backup alpine tar xzf /backup/ghostdata.tar.gz -C /data
   docker run --rm -v ghost_ghostdb:/data -v $(pwd):/backup alpine tar xzf /backup/ghostdb.tar.gz -C /data
   

4. Start the containers using Docker Compose:

   docker-compose up -d
   

5. Update the DNS A record to point to the new machine, and wait about 30 minutes for the changes to propagate.