:og:description: Use the -e flag to configure environment variables in Flower Docker containers, customizing telemetry, logging, and other settings for federated learning.
.. meta::
    :description: Use the -e flag to configure environment variables in Flower Docker containers, customizing telemetry, logging, and other settings for federated learning.

###########################
 Set Environment Variables
###########################

To set a variable inside a Docker container, you can use the ``-e <name>=<value>`` flag.
Multiple ``-e`` flags can be used to set multiple environment variables for a container.

*********
 Example
*********

.. code-block:: bash
    :substitutions:

    $ docker run -e FLWR_TELEMETRY_ENABLED=0 -e FLWR_TELEMETRY_LOGGING=0 \
         --rm flwr/superlink:|stable_flwr_version| \
         <additional-args>