From the Azure Portal home screen, search for storage accounts, or open the storage accounts utility from the Azure Services bar. Once you have opened storage accounts, open the storage account you wish to create a container in.
On left nav panel under "Data Storage" click on "Containers".
In the "Containers" screen in the top bar click + Container
On the right pop out panel, name the new container (this will be used in the ingest section of the config.json file under "container".
For Public Access Level select "Container (anonymous read access for containers and blobs)"
Leave advanced settings
The new container should populate under the name column in the Containers section under your storage account