diff --git a/terraform/modules/docker-network/templates/cloud-init-docker.yaml.tftpl b/terraform/modules/docker-network/templates/cloud-init-docker.yaml.tftpl
index c2b3261..ed7a120 100644
--- a/terraform/modules/docker-network/templates/cloud-init-docker.yaml.tftpl
+++ b/terraform/modules/docker-network/templates/cloud-init-docker.yaml.tftpl
@@ -1,4 +1,6 @@
 #cloud-config
+groups:
+- docker
 users:
   - name: ${admin_user}
     groups: users, admin, docker