ci: fix dind toolchain and docker config

Jenkinsfile

@@ -10,6 +10,9 @@ pipeline {
 apiVersion: v1
 kind: Pod
 spec:
+  nodeSelector:
+    kubernetes.io/arch: arm64
+    hardware: rpi5
   containers:
   - name: dind
     image: docker:27-dind
@@ -35,17 +38,19 @@ spec:
     volumeMounts:
     - name: workspace-volume
       mountPath: /home/jenkins/agent
-    - name: dind-storage
-      mountPath: /var/lib/docker
-    - name: docker-config
+    - name: docker-config-writable
       mountPath: /root/.docker
+    - name: docker-config-secret
+      mountPath: /docker-config
   volumes:
-  - name: docker-config
+  - name: docker-config-secret
     secret:
       secretName: harbor-robot-pipeline
       items:
       - key: .dockerconfigjson
         path: config.json
+  - name: docker-config-writable
+    emptyDir: {}
   - name: workspace-volume
     emptyDir: {}
   - name: dind-storage
@@ -74,7 +79,7 @@ spec:
         container('builder') {
           sh '''
             set -euo pipefail
-            apk add --no-cache bash curl make tar gzip git coreutils
+            apk add --no-cache bash curl make tar gzip git coreutils go ncurses
           '''
         }
       }
@@ -101,11 +106,18 @@ spec:
         container('builder') {
           sh '''
             set -euo pipefail
+            mkdir -p /root/.docker
+            cp /docker-config/config.json /root/.docker/config.json
+
+            # Harbor's build uses git metadata; Jenkins workspace ownership can trigger
+            # Git's safe.directory protection in containerized builds.
+            git config --global --add safe.directory '*'
 
             # `harbor-src/` itself matches `harbor-*`, so exclude it.
             SRC_DIR=$(find harbor-src -mindepth 1 -maxdepth 1 -type d -name "harbor-*" | head -n1)
             cd "${SRC_DIR}"
 
+            export DOCKER_BUILDKIT=1
             export VERSIONTAG="${VERSIONTAG}"
             export BASEIMAGETAG="${VERSIONTAG}"
             export IMAGENAMESPACE="${REGISTRY}"
@@ -139,8 +151,6 @@ spec:
     }
   }
   post {
-    always {
-      deleteDir()
-    }
+    always { echo 'done' }
   }
 }