Deploying Splunk Docker image fails to login
Well, apparently the password must be up to some default requirements, from https://hub.docker.com/r/splunk/splunk/:
For a basic standalone Splunk environment, run the following command:
$ docker run -d -p 8000:8000 -e 'SPLUNK_START_ARGS=--accept-license' -e 'SPLUNK_PASSWORD=' splunk/splunk:latest Note: The password supplied must conform to the default Splunk Enterprise password requirements*
After changing the password from '1234' to '12345678910', login worked fine (only default requirement that matters is password length should be at least 8 characters).
Since this failure to create user is silenced, and since this is only documented in dockerhub but not in github, I will open a case to notify them.