ci: Add Jenkins build+publish pipeline

ci/Jenkinsfile

@@ -0,0 +1,29 @@
+pipeline {
+    agent {
+        kubernetes {
+            yamlFile 'ci/podTemplate.yaml'
+            yamlMergeStrategy merge()
+            defaultContainer 'build'
+        }
+    }
+
+    stages {
+        stage('Build') {
+            steps {
+                sh 'make'
+            }
+        }
+
+        stage('Publish') {
+            environment {
+                PUBLISH_PATH = "/var/www/html/kickstart/${BRANCH_NAME}/"
+            }
+            steps {
+                sshagent(['jenkins-pxe']) {
+                    sh 'make publish'
+                }
+            }
+        }
+    }
+
+}

ci/podTemplate.yaml

@@ -0,0 +1,12 @@
+spec:
+  containers:
+  - name: build
+    image: git.pyrocufflink.net/containerimages/jenkins-common
+    volumeMounts:
+    - mountPath: /etc/ssh/ssh_known_hosts
+      name: ssh-known-hosts
+      subPath: ssh_known_hosts
+  volumes:
+  - name: ssh-known-hosts
+    configMap:
+      name: ssh-known-hosts