diff --git a/contrib/docker/Dockerfile b/contrib/docker/Dockerfile
index f8ae83fd..6f511fc1 100644
--- a/contrib/docker/Dockerfile
+++ b/contrib/docker/Dockerfile
@@ -2,7 +2,8 @@ FROM debian
 
 RUN apt-get update && apt-get install -y \
     libmosquitto1 \
-    curl
+    curl \
+    setserial
 
 RUN apt-get update && apt-get install -y \
     autoconf automake g++ make \
diff --git a/contrib/docker/release/Dockerfile b/contrib/docker/release/Dockerfile
index e59c0532..b5609a10 100644
--- a/contrib/docker/release/Dockerfile
+++ b/contrib/docker/release/Dockerfile
@@ -2,7 +2,8 @@ FROM debian
 
 RUN apt-get update && apt-get install -y \
     libmosquitto1 \
-    curl
+    curl \
+    setserial
 
 LABEL maintainer "ebusd@ebusd.eu"
 
@@ -15,6 +16,8 @@ RUN curl -SL https://github.com/john30/ebusd/releases/download/v${EBUSD_VERSION}
 
 RUN dpkg -i ebusd.deb
 
+RUN rm ebusd.deb
+
 RUN curl -SL https://github.com/john30/ebusd-configuration/archive/master.tar.gz \
     | tar xz --strip-components=3 -C /etc/ebusd ebusd-configuration-master/ebusd-2.1.x/de
 
diff --git a/contrib/docker/runtime/Dockerfile b/contrib/docker/runtime/Dockerfile
index 7d49bdb7..b3d21420 100644
--- a/contrib/docker/runtime/Dockerfile
+++ b/contrib/docker/runtime/Dockerfile
@@ -2,7 +2,8 @@ FROM debian
 
 RUN apt-get update && apt-get install -y \
     libmosquitto1 \
-    curl
+    curl \
+    setserial
 
 LABEL maintainer "ebusd@ebusd.eu"
 
@@ -15,6 +16,8 @@ COPY ebusd-${EBUSD_VERSION}_${EBUSD_ARCH}_mqtt1.deb ebusd.deb
 
 RUN dpkg -i ebusd.deb
 
+RUN rm ebusd.deb
+
 RUN curl -SL https://github.com/john30/ebusd-configuration/archive/master.tar.gz \
     | tar xz --strip-components=3 -C /etc/ebusd ebusd-configuration-master/ebusd-2.1.x/de