Local development setup

These are the steps (copied from here) for getting a local DBHub.io server running for development purposes:

• Install PostgreSQL, create new user and database, and import initial database schema
• Download and run minio
• Copy the config file in docker/config.toml to ~/.dbhub/config.toml and change all the paths, Postgres settings, etc.
• Add that user_override line to the config
• Make sure the directory in the disk_cache line exists
• Make sure the name docker-dev.dbhub.io is added to the /etc/hosts file
• Import the new CA certificates into DB4S
• Temporarily change the port in DB4S back to 5550 (you could also change it to 443 in the dbhub settings but that would require the server to run as root)
• go run . in the db4s and in the webui directories