Capture whether a script is run inside a docker

[anandhu-eng]

We can determine whether we are inside a Docker container by checking for the presence of the /.dockerenv file. However, we need to ascertain whether this method is limited to Linux Docker images and if there is a better approach to achieve this.

[anandhu-eng]

Article: https://forums.docker.com/t/detect-you-are-running-in-a-docker-container-buildx/139673/4