**Refactor Docker and Compose for enhanced compatibility and efficiency**

- Restructured `Dockerfile` to include a dedicated frontend build stage and improved runtime configurations.
- Added new health checks and adjusted environment variables for better container management.
- Updated cron job configurations to leverage `/opt/venv` and align with new paths.
- Refined `docker-compose` files for multi-service setups, including better volume and environment variable handling.
- Migrated `cbwebreader-cron` service setup and improved restart policies across the board.
- Enhanced `.gitea` CI workflow to use updated tools (`uv`), streamline buildx processes, and ensure proper version extraction from metadata.

.env.example

@@ -15,8 +15,10 @@ DB_DATABASE=cbwebreader
 # https://github.com/jacobian/dj-database-url
 DATABASE_URL='postgres://${DB_USER}:${DB_PASS}@${DB_HOST}/${DB_DATABASE}'
 
-# Path to your comics.
-COMIC_BOOK_VOLUME=/path/to/comic/folder
+# Path to your comics *inside* the container. Keep this as a container path.
+COMIC_BOOK_VOLUME=/comics
+# Host path that is mounted to the path above (this is the one that varies per machine).
+COMIC_BOOK_HOST_PATH=/path/to/comic/folder
 
 # Usually fine tp leave as is.
 STATIC_ROOT=/static
@@ -29,4 +31,4 @@ MEDIA_ROOT='/media'
 # UNRAR_TOOL = 'unrar.exe'
 
 # Comment the following if not using a reverse proxy.
-USE_X_FORWARDED_HOST=True
+USE_X_FORWARDED_HOST=True