Clean up CI images

Signed-off-by: Christopher Crone <[email protected]>

Author: chris-crone

Jenkinsfile

@@ -1,15 +1,20 @@
 node('gcp-linux-worker-0') {
     stage('Build') {
         dir('src/github.com/docker/lunchbox') {
-            checkout scm
-            sh 'rm -f *.tar.gz'
-            sh 'docker image prune -f'
-            sh 'make ci-lint'
-            sh 'make ci-test'
-            sh 'make ci-bin-linux'
-            sh 'make ci-bin-darwin'
-            sh 'make ci-bin-windows'
-            archiveArtifacts '*.tar.gz'
+            try {
+                checkout scm
+                sh 'rm -f *.tar.gz'
+                sh 'docker image prune -f'
+                sh 'make ci-lint'
+                sh 'make ci-test'
+                sh 'make ci-bin-linux'
+                sh 'make ci-bin-darwin'
+                sh 'make ci-bin-windows'
+                archiveArtifacts '*.tar.gz'
+            } finally {
+                def clean_images = /docker image ls --format "{{.ID}}\t{{.Tag}}" | grep $(git describe --always --dirty) | awk '{print $1}' | xargs docker image rm/
+                sh clean_images
+            }
         }
     }
 }