diff --git a/Dockerfile b/Dockerfile
index 4a84f0e..ad420ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,6 +26,7 @@ RUN apt-get update -y \
         # https://github.com/ruby/setup-ruby#using-self-hosted-runners
         libyaml-dev \
         # dockerd dependencies
+        kmod \
         tini \
         iptables
 
diff --git a/entrypoint.sh b/entrypoint.sh
index 97dfd93..d67e506 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if [ "RUN_DOCKERD" = "true" ]; then
+if [ "$RUN_DOCKERD" = "true" ]; then
   sudo /usr/bin/dockerd &
 fi