fix: install Harbor CA cert on ubuntu runner before build

.gitea/workflows/telegraf-snmp.yaml

@@ -23,6 +23,11 @@ jobs:
           username: ${{ vars.PRIVATE_REGISTRY_USER }}
           password: ${{ secrets.PRIVATE_REGISTRY_PASSWORD }}
 
+      - name: Install Harbor CA certificate
+        run: |
+          sudo cp buildkit/ca-chain.crt /usr/local/share/ca-certificates/harbor-ca.crt
+          sudo update-ca-certificates
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
 
@@ -30,9 +35,6 @@ jobs:
         uses: docker/setup-buildx-action@v3
         with:
           driver-opts: image=harbor.lan/tools/buildkit-with-ca:latest
-          config-inline: |
-            [registry."harbor.lan"]
-              ca = ["${{ github.workspace }}/buildkit/ca-chain.crt"]
 
       - name: Debug TLS in BuildKit
         run: |