fix(docker): Fix docker file

The docker file was updated to align with the software
requirements of the app. An additional script `install_odbc.sh` is added
to install the required microsoft ODBC driver.

.docker/entrypoint.sh

@@ -1,5 +1,13 @@
 #!/bin/sh
 
+# Install ODBC driver
+./install_odbc.sh
+
 # Start Dash and run in background
 echo "Starting Dash app..."
+if [ -f "/app/env.sh" ]; then
+    . "/app/env.sh"
+    echo "env.sh has been sourced."
+fi
+
 poetry run gunicorn app:server -b 0.0.0.0:8000