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There are many configuration values that you can override, for example the default admin email address. To do this you will need to edit the custom.conf file used by clowder. This file is located in the clowder-custom volume. You can either change the content of this folder directly (use docker volume inspect clowder_clowder_1 to find the actual location on disk), or you can exec into the running docker container (docker exec -ti clowder_clowder_1 /bin/bash) and goto the folder /home/clowder/custom. You can edit the custom.conf file to fit your needs. Once you finish making the changes you can exit the container using exit, this will not stop the container. You will need to restart the clowder container, which can be done using docker restart clowder_clowder_1.
A list of all values that can be changed can be found at https://opensource.ncsa.illinois.edu/bitbucket/projects/CATS/repos/clowder/browse/conf/application.conf.
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