Implement data persistence for safe app updates

- Add external volume mounting for database, uploads, and media files
- Update Dockerfile to conditionally initialize database only if it doesn't exist
- Move database to external /data volume for persistence across rebuilds
- Configure production environment with proper FLASK_CONFIG
- Add volume mappings for complete data persistence:
  * ./data:/data - Database persistence
  * ./uploads:/opt/moto_site/uploads - File uploads persistence
  * ./static/media:/opt/moto_site/static/media - Media files persistence
- Create init script that skips database creation if DB already exists
- Enable safe app updates without losing users, posts, or tracks

This ensures all user data persists across Docker container rebuilds and app updates.

Dockerfile

@@ -23,15 +23,26 @@ RUN mkdir -p uploads/images uploads/gpx
 # Set FLASK_APP so Flask CLI commands are available
 ENV FLASK_APP=run.py
 
-# Initialize the database and create admin at build time (as root, before switching user)
+# Create a script to conditionally initialize database
-RUN flask --app run.py init-db && flask --app run.py create-admin
+RUN echo '#!/bin/sh\n\
+if [ ! -f /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\
+    echo "Database initialized successfully"\n\
+else\n\
+    echo "Database already exists, skipping initialization"\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
-RUN adduser --disabled-password --gecos '' appuser && chown -R appuser:appuser /opt/moto_site
+RUN adduser --disabled-password --gecos '' appuser && \
+    chown -R appuser:appuser /opt/moto_site && \
+    mkdir -p /data && \
+    chown -R appuser:appuser /data
 USER appuser
 
 # Expose port
 EXPOSE 5000
 
 # Run the application with Gunicorn, looking for run:app in /opt/moto_site
-ENTRYPOINT ["/bin/sh", "-c", "exec gunicorn --bind 0.0.0.0:5000 run:app"]
+ENTRYPOINT ["/bin/sh", "-c", "/opt/moto_site/init_db_if_needed.sh && exec gunicorn --bind 0.0.0.0:5000 run:app"]

docker-compose.yml

@@ -8,10 +8,12 @@ services:
     ports:
       - "8100:5000"
     environment:
-      - FLASK_ENV=production
+      - FLASK_CONFIG=production
-      - DATABASE_URL=sqlite:///moto_adventure.db
+      - DATABASE_URL=sqlite:////data/moto_adventure.db
       - SECRET_KEY=ana_are_mere_si-si-pere_cat-cuprinde_in_cos
     working_dir: /opt/moto_site
     volumes:
-      - ./uploads:/opt/moto_site/uploads
+      - ./data:/data  # Database persistence
+      - ./uploads:/opt/moto_site/uploads  # File uploads persistence
+      - ./static/media:/opt/moto_site/static/media  # Media files persistence
     restart: unless-stopped