Running DSpace 7 using Docker Compose

• See Try out DSpace 7 page, the "Install via Docker" section.
• Additional commands/notes available in the Docker Compose READMEs in the codebase.
  • UI's Docker-Compose README: https://github.com/DSpace/dspace-angular/blob/main/docker/README.md
  • Backend's Docker-Compose README: https://github.com/DSpace/DSpace/blob/main/dspace/src/main/docker-compose/README.md