Rust based directory application to collect lists of federated instances of a software.

The application is built primarily using the following libraries:

• https://rocket.rs - web framework, including a web server and multi-threaded request handler
• https://hyper.rs - http client and server
• https://tera.netlify.com - template engine
• https://diesel.rs - database ORM and query builder

The image supports the use of the following environment variables:

• CRON: (Optional) If set when running the app a cron cycle is performed. Set it to CRON=FULL to run a full cron (once a day).
• GEOIP_MMDB: path to the GeoIP database, in MaxMind format
• ROCKET_DATABASES: database dict for Diesel SQLite library integration into Rocket
• ROCKET_SECRET_KEY: Needed in production environments, used to protect private cookies, generate this using openssl rand -base64 32

• /var/directory.sqlite: Database file, needs to be writeable
• /var/geoip-country.mmdb: GeoIP database, country level is sufficient

• 8000/tcp: HTTP of web service

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