diff --git a/build-kaniko.jenkins b/build-kaniko.jenkins
index 4418477..3467812 100644
--- a/build-kaniko.jenkins
+++ b/build-kaniko.jenkins
@@ -4,9 +4,9 @@ def repository = "registry.c.test-chamber-13.lan"
 def repositoryCreds = "harbor-repository-creds"
 
 podTemplate(
-	label: label,
-	name: "pipeline-worker",
-	yaml: """---
+    label: label,
+    name: "pipeline-worker",
+    yaml: """---
 apiVersion: v1
 kind: Pod
 metadata:
@@ -19,56 +19,72 @@ spec:
     tty: true
     command:
     - /busybox/cat
+  - name: alpine
+    imagePullPolicy: Always
+    image: ${repository}/library/alpine:latest
+    tty: true
+    command:
+    - /bin/sh
 """,
 ) {
-	node (label) {
-		def workspace = pwd()
+    node (label) {
+        def workspace = pwd()
 
-		stage ("Prepare Kaniko") {
-			container ("kaniko") {
-				withCredentials([usernameColonPassword(
-					credentialsId: repositoryCreds,
-					variable: "dCreds",
-				)]) {
-					def dockerJSON = """{
-						"auths": {
-							"${repository}": {
-								"auth": "${dcreds.bytes.encodeBase64().toString()}"
-							}
-						}
-					}"""
-					sh """
-						set +x
-						echo '${dockerJSON}' > /kaniko/.docker/config.json
-						printf '%s\\n' "-----BEGIN CERTIFICATE-----" \\
-      						"MIICLTCCAbOgAwIBAgIDAYagMAoGCCqGSM49BAMEME0xCzAJBgNVBAYTAlVTMScw" \\
-      						"JQYDVQQKDB5UZXN0IENoYW1iZXIgMTMgVHJ1c3QgU2VydmljZXMxFTATBgNVBAMM" \\
-      						"DFRDMTMgUm9vdCBSMTAgFw0xOTAxMDEwMDAwMDBaGA8yMDUwMDEwMTAwMDAwMFow" \\
-      						"TTELMAkGA1UEBhMCVVMxJzAlBgNVBAoMHlRlc3QgQ2hhbWJlciAxMyBUcnVzdCBT" \\
-      						"ZXJ2aWNlczEVMBMGA1UEAwwMVEMxMyBSb290IFIxMHYwEAYHKoZIzj0CAQYFK4EE" \\
-      						"ACIDYgAE8+/J1ECc0VHxTtGXFLnHJ3NGZ2SW38pp9wI58L5EQbHRLiezYuvkUbI/" \\
-      						"XGJjLnFdpgjo7W1FFlyhx5ITlCstUX5Sn9bLZiA0+mE0n6b8VwhXwkHlnIeRo7od" \\
-      						"Zu/OfSFjo2MwYTAdBgNVHQ4EFgQUrGqUJhyRp93wXF645VNtYatRk/AwHwYDVR0j" \\
-      						"BBgwFoAUrGqUJhyRp93wXF645VNtYatRk/AwDwYDVR0TAQH/BAUwAwEB/zAOBgNV" \\
-      						"HQ8BAf8EBAMCAYYwCgYIKoZIzj0EAwQDaAAwZQIxAJdgskimDJkf/MGVRrKotmNC" \\
-      						"xdH/UVQfQppjIR9FAiGeFDr47thclYrzIL6yCkV7nwIwYjf3MbOm/yWblzqe3Uyw" \\
-      						"UOemMEg3PjcKNsN65W2WVon5HIZx2XVfGRPjf5ZTVWzZ" \\
-      						"-----END CERTIFICATE-----" >> /kaniko/ssl/certs/ca-certificates.crt
-					"""
-				}
-			}
-		}
+        stage ("Get CoSign") {
+            container ("alpine") {
+                sh """
+                    apk add --no-cache curl jq
+                    curl --silent --location "\$(curl --silent "https://api.github.com/repos/sigstore/cosign/releases/latest" | jq -r '.assets[0].browser_download_url')" -output "${workspace}/cosign"
+                    chmod +x "${workspace}/cosign"
+                """
+            }
+        }
 
-		stage("Build Alpine with CA") {
-			container("kaniko") {
-				def DF = """FROM gcr.io/kaniko-project/executor:debug
+        stage ("Prepare Kaniko") {
+            container ("kaniko") {
+                withCredentials([usernameColonPassword(
+                    credentialsId: repositoryCreds,
+                    variable: "dCreds",
+                )]) {
+                    def dockerJSON = """{
+                        "auths": {
+                            "${repository}": {
+                                "auth": "${dcreds.bytes.encodeBase64().toString()}"
+                            }
+                        }
+                    }"""
+                    sh """
+                        set +x
+                        echo '${dockerJSON}' > /kaniko/.docker/config.json
+                        printf '%s\\n' "-----BEGIN CERTIFICATE-----" \\
+                            "MIICLTCCAbOgAwIBAgIDAYagMAoGCCqGSM49BAMEME0xCzAJBgNVBAYTAlVTMScw" \\
+                            "JQYDVQQKDB5UZXN0IENoYW1iZXIgMTMgVHJ1c3QgU2VydmljZXMxFTATBgNVBAMM" \\
+                            "DFRDMTMgUm9vdCBSMTAgFw0xOTAxMDEwMDAwMDBaGA8yMDUwMDEwMTAwMDAwMFow" \\
+                            "TTELMAkGA1UEBhMCVVMxJzAlBgNVBAoMHlRlc3QgQ2hhbWJlciAxMyBUcnVzdCBT" \\
+                            "ZXJ2aWNlczEVMBMGA1UEAwwMVEMxMyBSb290IFIxMHYwEAYHKoZIzj0CAQYFK4EE" \\
+                            "ACIDYgAE8+/J1ECc0VHxTtGXFLnHJ3NGZ2SW38pp9wI58L5EQbHRLiezYuvkUbI/" \\
+                            "XGJjLnFdpgjo7W1FFlyhx5ITlCstUX5Sn9bLZiA0+mE0n6b8VwhXwkHlnIeRo7od" \\
+                            "Zu/OfSFjo2MwYTAdBgNVHQ4EFgQUrGqUJhyRp93wXF645VNtYatRk/AwHwYDVR0j" \\
+                            "BBgwFoAUrGqUJhyRp93wXF645VNtYatRk/AwDwYDVR0TAQH/BAUwAwEB/zAOBgNV" \\
+                            "HQ8BAf8EBAMCAYYwCgYIKoZIzj0EAwQDaAAwZQIxAJdgskimDJkf/MGVRrKotmNC" \\
+                            "xdH/UVQfQppjIR9FAiGeFDr47thclYrzIL6yCkV7nwIwYjf3MbOm/yWblzqe3Uyw" \\
+                            "UOemMEg3PjcKNsN65W2WVon5HIZx2XVfGRPjf5ZTVWzZ" \\
+                            "-----END CERTIFICATE-----" >> /kaniko/ssl/certs/ca-certificates.crt
+                    """
+                }
+            }
+        }
 
+        stage("Build Alpine with CA") {
+            container("kaniko") {
+                def DF = """FROM gcr.io/kaniko-project/executor:debug
+COPY ./cosign /busybox/cosign
 COPY kaniko-chain.crt /kaniko/ssl/certs/ca-certificates.crt
 """
-				sh "cp /kaniko/ssl/certs/ca-certificates.crt \"${workspace}/kaniko-chain.crt\""
-				writeFile(file: workspace + "/Dockerfile", text: DF)
-				sh "/kaniko/executor --cleanup --context \"${workspace}\" -f \"${workspace}/Dockerfile\" --destination \"${repository}/library/kaniko:latest\""
-			}
-		}
-	}
+                sh "cp /kaniko/ssl/certs/ca-certificates.crt \"${workspace}/kaniko-chain.crt\""
+                writeFile(file: workspace + "/Dockerfile", text: DF)
+                sh "/kaniko/executor --cleanup --context \"${workspace}\" -f \"${workspace}/Dockerfile\" --destination \"${repository}/library/kaniko:latest\" --single-snapshot"
+            }
+        }
+    }
 }
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