Update to PSRule v0.18.0 (#7)

Dockerfile

@@ -1,12 +1,12 @@
 #
 # PSRule
 # 
-FROM mcr.microsoft.com/powershell:7.0.0-alpine-3.8
+FROM mcr.microsoft.com/powershell:7.0.1-alpine-3.8
 SHELL ["pwsh", "-Command"]
 RUN $ProgressPreference = [System.Management.Automation.ActionPreference]::SilentlyContinue; \
     $Null = New-Item -Path /ps_modules/ -ItemType Directory -Force; \
-    Save-Module -Name PSRule -RequiredVersion 0.16.0 -Force -Path /ps_modules/; \
-    Save-Module -Name PSRule.Rules.Azure -RequiredVersion 0.10.1 -Force -Path /ps_modules/; \
+    Save-Module -Name PSRule -RequiredVersion 0.18.0 -Force -Path /ps_modules/; \
+    Save-Module -Name PSRule.Rules.Azure -RequiredVersion 0.12.1 -Force -Path /ps_modules/; \
     Save-Module -Name PSRule.Rules.Kubernetes -RequiredVersion 0.2.0 -Force -Path /ps_modules/;
 
 COPY LICENSE README.md /

README.md

@@ -16,7 +16,7 @@ To get started [create a workflow](https://help.github.com/en/articles/configuri
 
 To include PSRule:
 
-1. Reference `BernieWhite/PSRule-actions@bewhite/dev`.
+1. Reference `BernieWhite/PSRule-actions@master`.
 2. Configure `source`.
 
 For example: