Error Handling CI Deployments Using Powershell

PowerShell's a great tool for use in remote deployments from a CI server. However, it's default error handling does not cause a failure on error which can leave failed deployments reporting success!

To make PowerShell scripts fail on non-terminating errors add the following line to the top of the script after any params:

$ErrorActionPreference = "Stop"

This will cause the script to fail on terminating and non-terminating errors hence preventing the Powershell script succeeding when elements of it have failed.