ECS Compatible env checks for Splunk-Ansible for Docker Support

[mattc-splunk]

In splunk-ansible/inventory/environ.py

line 98 in the current revision

The system checks for the presence of certain files to allow startup to run

"if os.path.isfile("/.dockerenv") or os.path.isfile("/run/.containerenv") or os.path.isdir("/var/run/secrets/kubernetes.io") or os.environ.get("KUBERNETES_SERVICE_HOST"):"

ECS does not seed these files, so we are required to drop a blank copy of one of these files into the file structure to get it to run properly

Our Dockerfile:

RUN mkdir -p /run

COPY ./images/.containerenv /run/

Please add a check, or change this dependency, so the container will function on ECS