diff --git a/playbooks/functional-test/docker.yaml b/playbooks/functional-test/docker.yaml
index b539336..721b5a7 100644
--- a/playbooks/functional-test/docker.yaml
+++ b/playbooks/functional-test/docker.yaml
@@ -20,7 +20,10 @@
   command: docker login localhost:9000 -u testuser -p testpass
 
 - name: Push the test image to the registry
-  command: docker push localhost:9000/test/image
+  # Use a lot of concurrency to check registry with concurrent pushes
+  shell: printf "1\n2\n3\n4\n" | xargs -P 4 -I DNE docker push localhost:9000/test/image
+  args:
+    executable: /bin/bash
 
 - name: Remove the test image from the local cache
   command: docker rmi localhost:9000/test/image
diff --git a/playbooks/functional-test/podman.yaml b/playbooks/functional-test/podman.yaml
index 33054d9..4c9027f 100644
--- a/playbooks/functional-test/podman.yaml
+++ b/playbooks/functional-test/podman.yaml
@@ -20,7 +20,10 @@
   command: podman login localhost:9000 -u testuser -p testpass
 
 - name: Push the test image to the registry
-  command: podman push localhost:9000/test/image
+  # Use a lot of concurrency to check registry with concurrent pushes
+  shell: printf "1\n2\n3\n4\n" | xargs -P 4 -I DNE podman push localhost:9000/test/image
+  args:
+    executable: /bin/bash
 
 - name: Remove the test image from the local cache
   command: podman rmi localhost:9000/test/image
diff --git a/playbooks/functional-test/restricted.yaml b/playbooks/functional-test/restricted.yaml
index a89d802..a9d2743 100644
--- a/playbooks/functional-test/restricted.yaml
+++ b/playbooks/functional-test/restricted.yaml
@@ -21,7 +21,10 @@
   command: docker login localhost:9000 -u writeuser -p writepass
 
 - name: Push the test image to the registry
-  command: docker push localhost:9000/test/image
+  # Use a lot of concurrency to check registry with concurrent pushes
+  shell: printf "1\n2\n3\n4\n" | xargs -P 4 -I DNE docker push localhost:9000/test/image
+  args:
+    executable: /bin/bash
 
 - name: Remove the test image from the local cache
   command: docker rmi localhost:9000/test/image
diff --git a/playbooks/functional-test/run.yaml b/playbooks/functional-test/run.yaml
index 8e4da26..7fc2cdf 100644
--- a/playbooks/functional-test/run.yaml
+++ b/playbooks/functional-test/run.yaml
@@ -24,6 +24,7 @@
           - skopeo
           - buildah
           - podman
+          - findutils
         state: present
       become: true
     - name: Run setup tasks
diff --git a/playbooks/functional-test/setup.yaml b/playbooks/functional-test/setup.yaml
index 10e7925..2ea39cc 100644
--- a/playbooks/functional-test/setup.yaml
+++ b/playbooks/functional-test/setup.yaml
@@ -61,7 +61,7 @@
   command: "cp /run/user/{{ ansible_user_uid }}/auth.json {{ workspace }}/containers-auth.json"
 
 - name: Create a local containers image
-  shell: buildah commit --rm $(buildah from scratch) testimage
+  shell: buildah commit --rm $(buildah from docker.io/zuul/zuul-registry) testimage
 
 - name: Ensure image file is not present
   file: