FZJ : Implementation of institute specific Gitlab CI/CD

This issue focuses on the implementation of FZJ institute-specific Gitlab CI/CD and the configurations of docker & docker-compose files.

As per the previous discussion with @nils.brinckmann, specifications of the institute-based deployment are shown below,

Requirements for the institute-specific deployment:

• database credentials
• the client id for the Helmholtz aai
• An S3 endpoint for the attachments (can be a minio included in the docker compose as for the GFZ, or can be an external bucket as for the UFZ)
• idl urls & tokens
• pid related environment variables
• (cv doesn't need to be institute specific anymore, but it could be)
• if you run matomo (to collect usage statistics) then you need your own configuration here as well