Inital commit.

images/linux/scripts/installers/1804/powershellcore.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+################################################################################
+##  File:  powershellcore.sh
+##  Desc:  Installs powershellcore
+################################################################################
+
+# Source the helpers for use with the script
+source $HELPER_SCRIPTS/document.sh
+
+LSB_RELEASE=$(lsb_release -rs)
+
+# Install Powershell
+apt-get install -y powershell
+
+# Temp fix based on: https://github.com/PowerShell/PowerShell/issues/9746 
+sudo apt remove libicu64
+
+# Run tests to determine that the software installed as expected
+echo "Testing to make sure that script performed as expected, and basic scenarios work"
+if ! command -v pwsh; then
+    echo "pwsh was not installed"
+    exit 1
+fi
+if ! pwsh -c 'Write-Host Hello world'; then
+    echo "pwsh failed to run"
+    exit 1
+fi
+
+# Document what was added to the image
+echo "Lastly, documenting what we added to the metadata file"
+DocumentInstalledItem "Powershell ($(pwsh --version))"