ci: Begin CI pipeline

ci/Jenkinsfile

@@ -27,16 +27,18 @@ pipeline {
             }
         }
 
-        parallel {
-            stage('Build Initramfs') {
-                steps {
-                    sh '. ci/build-initramfs.sh'
+        stage('Build') {
+            parallel {
+                stage('Build Initramfs') {
+                    steps {
+                        sh '. ci/build-initramfs.sh'
+                    }
                 }
-            }
 
-            stage('Build Rootfs') {
-                steps {
-                    sh '. ci/build-rootfs.sh'
+                stage('Build Rootfs') {
+                    steps {
+                        sh '. ci/build-rootfs.sh'
+                    }
                 }
             }
         }