Create initial Jenkinsfile

Jenkinsfile

@@ -0,0 +1,28 @@
+pipeline {
+  agent {
+    dockerfile { image 'rust:1.44.0-alpine' }
+  }
+  stages {
+    stage('build') {
+      steps {
+        sh 'cargo build --release'
+      }
+    }
+    stage('lint') {
+      steps {
+        sh 'cargo clippy'
+      }
+    }
+    stage('test') {
+      steps {
+        sh 'cargo test'
+      }
+    }
+  }
+  post {
+    always {
+      archiveArtifacts artifacts: 'target/release/rack' fingerprint: true
+    }
+  }
+}
+