ci: Begin Jenkins build pipeline

ci/Jenkinsfile

@@ -0,0 +1,27 @@
+// vim: set sw=4 ts=4 sts=4 et :
+pipeline {
+    agent {
+        kubernetes {
+            yamlFile 'ci/podTemplate.yaml'
+            defaultContainer 'build'
+            yamlMergeStrategy merge()
+        }
+    }
+
+    stages {
+        stage('Build') {
+            steps {
+                sh 'make -C aimee-os CONFIGDIR=${PWD} O=/build'
+            }
+        }
+    }
+
+    post {
+        success {
+            dir('/home/jenkins/agent/_build/images') {
+                sh 'zstd --rm sdcard.img & zstd --rm firmware.img & wait'
+                archiveArtifacts '*'
+            }
+        }
+    }
+}

ci/podTemplate.yaml

@@ -0,0 +1,32 @@
+spec:
+  containers:
+  - name: build
+    image: git.pyrocufflink.net/aimeeos/build/build-aarch64-unknown-linux-gnu
+    command:
+    - /bin/sh
+    - -c
+    - |
+      trap 'kill $!; exit' TERM
+      sleep infinity &
+      wait
+    securityContext:
+      capabilities:
+        add:
+        - CAP_SETFCAP
+    volumeMounts:
+    - mountPath: /build
+      name: workspace-volume
+      subPath: _build
+    - mountPath: /mnt/gentoo
+      name: workspace-volume
+      subPath: gentoo
+    - mountPath: /usr/aarch64-unknown-linux-gnu/var/cache/binpkgs
+      name: workspace-volume
+      subPath: binpkgs
+    - mountPath: /var/cache/binpkgs
+      name: workspace-volume
+      subPath: binpkgs
+    - mountPath: /var/cache/distfiles
+      name: workspace-volume
+      subPath: distfiles
+  hostUsers: false