diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index c1e02f25b1bbb9532096cdcb31e356a9dbc093f5..728ddafdb13958925a8b8464e78a5a4595bdee5e 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -55,3 +55,21 @@ jobs:
 
     steps:
       - template: .azure/steps.yml
+
+  - job: 'DockerSlim'
+    pool:
+      vmImage: ubuntu-16.04
+
+    steps:
+      - script: |
+          docker pull renovate/renovate:slim
+        displayName: Pull old slim renovate image as cache
+
+      - script: |
+          export DOCKER_BUILDKIT=1
+          docker build --cache-from renovate/renovate:slim -t renovate-test -f Dockerfile.slim .
+        displayName: Build slim renovate image
+
+      - script: |
+          docker run --rm -t renovate-test --version
+        displayName: Test slim renovate image