Read configurations from different files

[VincenzoFerme]

We are moving some configuration variables to be handled by Consul, and serialised to file by envconsul. This means we need to read also another *.yml file (for now at boot time of the application, since we do not expect it to be updated), and store the information in a struct.

Location of the file in the container:

• /app/config.yml

A reference to start with for reading information also from this file:

• https://github.com/go-yaml/yaml

A reference for future work, where we should monitor the changes to the file and update the configuration stored in memory:

• https://github.com/go-fsnotify/fsnotify
• https://godoc.org/golang.org/x/exp/inotify

Once it is done, remove the MINIO variables also from the deployment descriptor of the service.