The following article explains how to verify if there is connectivity between the Docker container in which BlazeMeter's on-premise agent is installed to BlazeMeter's API endpoint.
To check for connectivity to the BlazeMeter API servers from inside a container using the following command:
$ sudo docker run -it taurus-cloud:latest curl https://a.blazemeter.com/api/v4/tests
It should result in a JSON output:
Once you have verified the above use the following commands to remove the container that is created by the above command:
$ sudo docker ps -a (Get the container ID for the blazemeter:latest container)
$ sudo docker rm <Container ID> (Removes the container)