Add docker buildx setup to release.jenkinsfile (#42)

Author: iplay88keys

release.Jenkinsfile

@@ -31,6 +31,7 @@ pipeline {
           }
           steps {
             sh 'echo $HARBOR_CREDS_PSW | docker login $DOCKER_REPO -u $HARBOR_CREDS_USR --password-stdin'
+            sh './scripts/install_docker_buildx.sh'
             sh 'make publish'
           }
         }
@@ -44,6 +45,7 @@ pipeline {
 
           steps {
             sh 'echo $DOCKERHUB_CREDS_PSW | docker login -u $DOCKERHUB_CREDS_USR --password-stdin'
+            sh './scripts/install_docker_buildx.sh'
             sh 'make publish'
           }
         }

scripts/install_docker_buildx.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -e
+if [[ ! -f "$HOME/.docker/cli-plugins/docker-buildx" ]]; then
+  echo "installing docker buildx..."
+  wget -q -O docker-buildx https://github.com/docker/buildx/releases/download/v0.9.1/buildx-v0.9.1.linux-amd64
+  chmod a+x docker-buildx
+  [[ ! -d "$HOME/.docker/cli-plugins" ]] && mkdir -p ~/.docker/cli-plugins
+  mv docker-buildx ~/.docker/cli-plugins
+  echo "successfully installed docker buildx: $(docker buildx version)"
+else
+  echo "buildx already installed: $(docker buildx version)"
+fi