diff --git a/Dockerfile.in b/Dockerfile.in
index 9027c3b..d227e27 100644
--- a/Dockerfile.in
+++ b/Dockerfile.in
@@ -19,6 +19,7 @@ RUN apt-get update \
     && apt-get -y install \
         ca-certificates \
         coreutils \
+        socat \
         git \
         openssh-client \
     && rm -rf /var/lib/apt/lists/*