Docs 2 (#21)

* chore: simplify application-docker.properties configuration

- Removed unused server and static resource settings.
- Updated property names for consistency (`paikka.import-configuration.threads` → `paikka.import.threads`).
- Adjusted default path for `paikka.stats-db-path`.

* chore: add STATS_DIR environment variable and directory setup in Dockerfile

* chore: update docker-compose.yml service configuration

- Simplified environment variables for `paikka` service.
- Adjusted `start_period` in healthcheck.
- Removed unused volume drivers for cleaner setup.

* docs: update README formatting and environment variable details

- Improved list indentation for better readability.
- Clarified admin password requirements and `.env` setup in Docker Compose section.
- Updated memory and swap recommendations for import operations.
- Enhanced example commands with detailed parameter descriptions.

* docs: add official instance details to README with usage guidelines

Author: dgraf-gh

README.md

@@ -1,5 +1,16 @@
 ![](.github/banner.png)
 
+## Official Instance
+
+There is an official instance of PAIKKA running at **https://geo.dedicatedcode.com** that you can use for free. 
+
+**Important notes about this instance:**
+- There are **no usage limits or restrictions** – feel free to integrate it into your projects.
+- However, there are **no guarantees about availability or SLA** (Service Level Agreement). The service is provided on a best-effort basis.
+- The instance is shared among all users. **Please do not abuse it** – excessive or abusive usage will affect everyone else.
+
+Be nice to each other and use the service responsibly.
+
 PAIKKA is a specialized reverse geocoding service designed to provide high-performance location resolution for [Reitti](https://github.com/dedicatedcode/reitti). The name comes from the Finnish word for "place" and is pronounced [ˈpɑi̯kːɑ].
 
 ## Overview
@@ -485,4 +496,4 @@ This project is licensed under the GNU Affero General Public License v3 (AGPLv3)
 
 ## About
 
-PAIKKA is developed as part of the Reitti ecosystem by (https://github.com/dedicatedcode). It provides the geocoding infrastructure that powers location-based features in Reitti.
+PAIKKA is developed as part of the Reitti ecosystem by (https://github.com/dedicatedcode). It provides the geocoding infrastructure that powers location-based features in Reitti.