add container for cache indices & search API

[elrayle]

Description

For sustainability and sharing of the infrastructure to support searching cached authorities, a Docker image of the search API with support for reading indices from a Docker volume will be created. Templates to aid with deployment will also be created.

• [ ] create Dockerfile and docker-compose.yml
  • [ ] create an image of the search API (may be as simple as using tomcat image and dropping in war file)
  • [ ] create volume to hold indices
• [ ] create github actions to deploy new image
  • [ ] commits to dev deploy to int private image
  • [ ] commits to main deploy to stg private image
  • [ ] release deploys to public image
• [ ] write templates to automate deploy to AWS