Move from template analyser to psrule for security audits (#133)

Author: tonybaloney

.github/workflows/bicep-audit.yml

@@ -1,15 +1,15 @@
-name: Validate AZD template
+name: Validate bicep templates
 on:
   push:
     branches: 
       - main
     paths:
-      - "infra/**"
+      - "**/*.bicep"
   pull_request:
     branches: 
       - main
     paths:
-      - "infra/**"
+      - "**/*.bicep"
   workflow_dispatch:
 
 jobs:
@@ -21,15 +21,23 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Run Microsoft Security DevOps Analysis
-        uses: microsoft/security-devops-action@preview
-        id: msdo
-        continue-on-error: true
+      - name: Run PSRule analysis
+        uses: microsoft/[email protected]
         with:
-          tools: templateanalyzer
+          modules: PSRule.Rules.Azure
+          baseline: Azure.Pillar.Security
+          inputPath: infra/*.test.bicep
+          outputFormat: Sarif
+          outputPath: reports/ps-rule-results.sarif
+          summary: true
+        continue-on-error: true
+          
+        env:
+          PSRULE_CONFIGURATION_AZURE_BICEP_FILE_EXPANSION: 'true'
+          PSRULE_CONFIGURATION_AZURE_BICEP_FILE_EXPANSION_TIMEOUT: '30'
 
-      - name: Upload alerts to Security tab
+      - name: Upload results to security tab
         uses: github/codeql-action/upload-sarif@v3
         if: github.repository_owner == 'Azure-Samples'
         with:
-          sarif_file: ${{ steps.msdo.outputs.sarifFile }}
+          sarif_file: reports/ps-rule-results.sarif

infra/main.test.bicep

@@ -0,0 +1,17 @@
+// This file is for doing static analysis and contains sensible defaults
+// for the bicep analyser to minimise false-positives and provide the best results.
+
+// This file is not intended to be used as a runtime configuration file.
+
+targetScope = 'subscription'
+
+param environmentName string = 'testing'
+param location string = 'westus2'
+
+module main 'main.bicep' = {
+  name: 'main'
+  params: {
+    environmentName: environmentName
+    location: location
+  }
+}

ps-rule.yaml

@@ -0,0 +1,5 @@
+# YAML: Set the AZURE_BICEP_FILE_EXPANSION configuration option to enable expansion
+configuration:
+  AZURE_BICEP_FILE_EXPANSION: true
+  AZURE_DEPLOYMENT_NONSENSITIVE_PARAMETER_NAMES:
+   - resourceToken