Add an example Jenkinsfile which I can load into Jenkins

Makefile

@@ -1,5 +1,6 @@
 check: vendor/bats
 	./vendor/bats/bin/bats $(wildcard t/*.bats) $(wildcard t/**/*.bats)
+	./resources/io/codevalet/externalartifacts/upload-file-azure.sh README.adoc
 
 vendor/bats:
 	mkdir -p vendor

example/Jenkinsfile

@@ -0,0 +1,18 @@
+pipeline {
+    agent any
+
+    environment {
+        AZURE_STORAGE_ACCOUNT = 'codevaletartifacts'
+        AZURE_CONTAINER_NAME  = 'jenkins'
+        AZURE_ACCESS_KEY      = credentials('azure-access-key')
+    }
+
+    stages {
+        stage('Test') {
+            steps {
+                sh 'date > timestamp.txt'
+                archiveArtifacts 'timestamp.txt'
+            }
+        }
+    }
+}