diff --git a/Dockerfile b/Dockerfile
index 8800738bdee..efa7dfbabc7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -37,6 +37,7 @@ RUN apk --no-cache add \
     openssh \
     s6 \
     sqlite \
+    socat \
     su-exec \
     gnupg