build: Cleanup virtual machine after builds

.gitea/workflows/actions.yaml

@@ -83,12 +83,9 @@ jobs:
 
           echo "BUILD_COMMIT=$(echo ${{ gitea.sha }} | cut -c 1-10)" >> $GITHUB_ENV
           echo "BUILD_SUFFIX=$(openssl rand -hex 3)" >> $GITHUB_ENV
-      - name: Run `packer validate`
+      - name: Validate packer template files
         id: validate
         run: |
-          # BUILD_COMMIT=$(echo "${{ gitea.sha }}" | cut -c 1-10)
-          # BUILD_SUFFIX=$(openssl rand -hex 3)
-
           packer validate \
             -only=vsphere-iso.bootstrap \
             -var vm_name=${{ gitea.run_number }}-${BUILD_COMMIT}-${BUILD_SUFFIX} \
@@ -101,12 +98,10 @@ jobs:
             -var k8s_version=${{ steps.get_k8sversion.outputs.result }} \
             -var appliance_version=${{ needs.semrel_dryrun.outputs.version }} \
             ./packer
-      - name: Run `packer build`
+      - name: Build packer template
         run: |
-          # BUILD_COMMIT=$(echo "${{ gitea.sha }}" | cut -c 1-10)
-          # BUILD_SUFFIX=$(openssl rand -hex 3)
-
           packer build \
+            -on-error=cleanup -timestamp-ui \
             -only=vsphere-iso.bootstrap \
             -var vm_name=${{ gitea.run_number }}-${BUILD_COMMIT}-${BUILD_SUFFIX} \
             -var docker_username=${{ secrets.DOCKER_USERNAME }} \
@@ -121,7 +116,6 @@ jobs:
         # env:
         #   PACKER_LOG: 1
 
-
   # semrel:
   #   name: Semantic Release
   #   runs-on: dind-rootless