feature: added docker buildx

Dockerfile

@@ -44,4 +44,6 @@ RUN set -o errexit -o nounset && echo "Installing build dependencies" && \
     echo "Editing startGroovy to include java.xml.bind module" &&  \
     sed --in-place 's|startGroovy ( ) {|startGroovy ( ) {\n JAVA_OPTS="$JAVA_OPTS --add-modules=ALL-SYSTEM"|' "${GROOVY_HOME}/bin/startGroovy"
 
+RUN apk add --no-cache openssh-client
 
+COPY --from=docker/buildx-bin /buildx /usr/libexec/docker/cli-plugins/docker-buildx

Jenkinsfile

@@ -9,7 +9,7 @@ def resolveImageName(env) {
 pipeline {
     agent {
         docker {
-            image 'alpine:3.17.3'
+            image 'git.tswf.io/docker-base-images/alpine-base:1.0.0-3.17.3'
             // Mount docker socket for docker-in-docker
             args '-v /var/run/docker.sock:/var/run/docker.sock'
         }
@@ -17,7 +17,6 @@ pipeline {
     stages {
         stage('prepare') {
             steps {
-                sh "apk update && apk add --no-cache git docker-cli"
                 script {
                     env.IMAGE_BASE_NAME = "jdk14-alpine"
                     env.RELEASE_TAG_PREFIX = "release-"