Refactor DuckDB ODBC Docker image documentation

integrated relevant information into the ODBC driver installation instructions.

Author: lovasoa

README.md

@@ -175,17 +175,6 @@ To run on a server, you can use [the docker image](https://hub.docker.com/r/lova
 We provide compiled binaries only for the x86_64 architecture, but provide docker images for other architectures, including arm64 and armv7. If you want to run SQLPage on a Raspberry Pi or 
 a cheaper ARM cloud instance, using the docker image is the easiest way to do it.
 
-#### DuckDB ODBC Docker Image
-
-A DuckDB-enabled variant is available with pre-installed DuckDB ODBC drivers:
-
-- Use the `-duckdb` suffix: `lovasoa/sqlpage:main-duckdb` or `lovasoa/sqlpage:latest-duckdb`
-- Comes pre-configured to connect to DuckDB at `/var/lib/sqlpage/duckdb.db`
-- To use a custom database location, set `DATABASE_URL`:
-  - `docker run -e DATABASE_URL="Driver=DuckDB;Database=/path/to/your.db" -p 8080:8080 lovasoa/sqlpage:main-duckdb`
-- To persist your DuckDB database, mount a volume:
-  - `docker run -v ./data:/var/lib/sqlpage lovasoa/sqlpage:main-duckdb`
-
 ### On Mac OS, with homebrew
 
 An alternative for Mac OS users is to use [SQLPage's homebrew package](https://formulae.brew.sh/formula/sqlpage).
@@ -205,6 +194,13 @@ You still need to install or provide the database-specific ODBC driver for the d
 
 #### Install your ODBC database driver
   - [DuckDB](https://duckdb.org/docs/stable/clients/odbc/overview.html)
+    - If you use docker, a DuckDB-enabled image variant is available with pre-installed DuckDB ODBC drivers
+        - Use the `-duckdb` suffix: `lovasoa/sqlpage:main-duckdb` or `lovasoa/sqlpage:latest-duckdb`
+        - Comes pre-configured to connect to DuckDB at `/var/lib/sqlpage/duckdb.db` inside the container
+        - To customize [connection options](https://duckdb.org/docs/stable/clients/odbc/configuration), set `DATABASE_URL`:
+          - `docker run -e DATABASE_URL="Driver=DuckDB;Database=/path/to/your.db" -p 8080:8080 lovasoa/sqlpage:main-duckdb`
+        - To persist your DuckDB database, mount a volume:
+          - `docker run -v ./data:/var/lib/sqlpage lovasoa/sqlpage:main-duckdb`
   - [Snowflake](https://docs.snowflake.com/en/developer-guide/odbc/odbc)
   - [BigQuery](https://cloud.google.com/bigquery/docs/reference/odbc-jdbc-drivers)
   - For other databases, follow your database's official odbc install instructions.