examples/microservices-orders Windows WSL2

Windows 10 18363.1198
Docker Desktop 2.5.0.1 (49550)
Engine: 19.03.13
Compose: 1.27.4
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal

[Microservices example](https://docs.confluent.io/platform/current/tutorials/examples/microservices-orders/docs/index.html)
Exercise 0: Run end-to-end example
Using Docker

Step 3: `./read-topics-docker.sh`
errors with
```
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
chdir: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
```

In my case I had cloned `examples` into a windows directory `/mnt/c/examples/`
moving the examples directory to `/home/mdillon/examples/microservices-orders`
fixed the issue.

Start with Exercise 0 of the microservices-orders tutorial and the ./read-topics-docker.sh entry point. Reproduce the failure from /mnt/c/examples/ under WSL2, then compare it with the working path under /home/mdillon/examples/microservices-orders. Done means the example’s supported Windows WSL2 workflow is clear and the reported error is addressed or documented.

Written by the indexing model from the issue text.