Adds declarative functions

vars/declarativeFunctions.groovy

@@ -1,5 +1,103 @@
 #!groovy
 
+import groovy.json.JsonOutput
+
+def deletePod (Map config) {
+def ws = pwd()
+        sh """
+            if [ ! -f "/usr/bin/curl" ] || [ ! -x "/usr/bin/curl" ]; then
+                apk add --no-cache curl
+            fi
+            if [ ! -f "/usr/local/bin/kubectl" ] || [ ! -x "/usr/local/bin/kubectl" ]; then
+                curl -L --silent https://nexus.c.test-chamber-13.lan/repository/google-k8s/\$(curl -s https://nexus.c.test-chamber-13.lan/repository/google-k8s/stable.txt)/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl
+                chmod +x /usr/local/bin/kubectl
+            fi
+        """
+
+        withKubeConfig ([
+            credentialsId: config.kubeAuth,
+            serverUrl: config.kubeURL,
+            namespace: config.namespace
+        ]) {
+            sh "for i in \$(kubectl get pods --selector ${config.selector} -o name); do kubectl delete \${i}; done"
+        }
+    }
+
+def createSecret (Map config) {
+    def ws = pwd()
+    sh """
+        if [ ! -f "/usr/bin/curl" ] || [ ! -x "/usr/bin/curl" ]; then
+            apk add --no-cache curl
+        fi
+        if [ ! -f "/usr/local/bin/kubectl" ] || [ ! -x "/usr/local/bin/kubectl" ]; then
+            curl -L --silent https://nexus.c.test-chamber-13.lan/repository/google-k8s/\$(curl -s https://nexus.c.test-chamber-13.lan/repository/google-k8s/stable.txt)/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl
+            chmod +x /usr/local/bin/kubectl
+        fi
+    """
+
+    withKubeConfig ([
+        credentialsId: config.kubeAuth,
+        serverUrl: config.kubeURL,
+        namespace: config.namespace
+    ]) {
+        sh "printf '%s\n' \"" + config.secret + "\" | kubectl apply -f -"
+    }
+}
+
+def buildContainer (Map config, List buildArg = []) {
+    def ws = pwd()
+    writeFile (file: ws + "/Dockerfile", text: config.dockerFile)
+    withCredentials([usernameColonPassword(
+        credentialsId: config.repoCreds,
+        variable: "dCreds"
+    )]) {
+        sh "set +x; printf '{\"auths\":{\"%s\":{\"auth\": \"%s\"}}}' \"${config.repository}\" \"${dcreds.bytes.encodeBase64().toString()}\" > /kaniko/.docker/config.json"
+    }
+    def buildArguments = ""
+    for (i in buildArg) {
+        buildArguments += " --build-arg ${i}"
+    }
+    sh """
+        /kaniko/executor \\
+            --context "${ws}" \\
+            -f "${ws}/Dockerfile" \\
+            --destination "${config.imageDest}" \\
+            ${buildArguments}
+    """
+}
+
+def buildContainerMultipleDestinations (Map config, List buildArg = []) {
+    def ws = pwd()
+    writeFile (file: ws + "/Dockerfile", text: config.dockerFile)
+
+    def repoAuth = ["auths": [:]]
+    for (i in config.repositoryAccess) {
+        withCredentials([usernameColonPassword(
+            credentialsId: i.credentials,
+            variable: "dCreds"
+        )]) {
+            repoAuth."auths"[i.repository] = ["auth": dCreds.bytes.encodeBase64().toString()]
+        }
+    }
+    sh "set +x; printf '${JsonOutput.toJson(repoAuth)}' > /kaniko/.docker/config.json"
+
+    def buildArguments = ""
+    for (i in config.destination) {
+        buildArguments += " --destination \"${i}\""
+    }
+
+    for (i in buildArg) {
+        buildArguments += " --build-arg ${i}"
+    }
+
+    sh """
+        /kaniko/executor \\
+            --context "${ws}" \\
+            -f "${ws}/Dockerfile" \\
+            ${buildArguments}
+    """
+}
+
 def pushArtifact (Map config) {
     def ws = pwd()
     sh "apk add --no-cache curl"
@@ -9,4 +107,4 @@ def pushArtifact (Map config) {
     )]) {
         sh 'curl --fail --request PUT --user "$aCreds" --upload-file "' + config.filePath + config.fileName + '" "' + config.fileURL + config.fileName + '"'
     }
-}
+}