Fix Interactive Route Map: Create MapRoute records from GPX files

- Create MapRoute database records for all GPX files for map visualization
- Populate route statistics (distance, elevation, coordinates) from GPX parsing
- Update GPX file statistics to mirror MapRoute data for post detail pages
- Enable /community/api/routes endpoint to return proper route data for map iframe
- Fix post detail page GPX statistics display

This resolves the issue where the community map showed '2 routes discovered'
but routes weren't actually rendering on the Leaflet.js map visualization.

Changes:
- Dockerfile: Updated init script paths and added migrate-db call
- app/__init__.py: Added admin user auto-creation with error handling
- app/routes/community.py: Added debug logging and API route for map data
- docker-compose.yml: Simplified to use .env for environment variables
- run.py: Added comprehensive database schema migration command

Dockerfile

@@ -25,13 +25,14 @@ ENV FLASK_APP=run.py
 
 # Create a script to conditionally initialize database
 RUN echo '#!/bin/sh\n\
-if [ ! -f /data/moto_adventure.db ]; then\n\
+if [ ! -f /opt/moto_site/data/moto_adventure.db ]; then\n\
     echo "Database not found, initializing..."\n\
     flask --app run.py init-db\n\
-    flask --app run.py create-admin\n\
+    flask --app run.py migrate-db\n\
     echo "Database initialized successfully"\n\
 else\n\
-    echo "Database already exists, skipping initialization"\n\
+    echo "Database exists, running migrations..."\n\
+    flask --app run.py migrate-db\n\
 fi' > /opt/moto_site/init_db_if_needed.sh && chmod +x /opt/moto_site/init_db_if_needed.sh
 
 # Create non-root user and set permissions