diff --git a/node-red/Dockerfile b/node-red/Dockerfile
index 8ee110c..fe926dd 100644
--- a/node-red/Dockerfile
+++ b/node-red/Dockerfile
@@ -5,11 +5,12 @@
 FROM alpine
 MAINTAINER kev <noreply@datageek.info>
 
-RUN apk add -U bash \
-               build-base \
-               nodejs \
-               python \
-               python-dev \
+RUN set -xe \
+    && apk add -U bash \
+                  build-base \
+                  nodejs \
+                  python \
+                  python-dev \
     && npm install -g node-red node-red-admin \
     && apk del build-base \
                python-dev \
diff --git a/node-red/arm/Dockerfile b/node-red/arm/Dockerfile
index d73e93b..e7c949e 100644
--- a/node-red/arm/Dockerfile
+++ b/node-red/arm/Dockerfile
@@ -5,11 +5,12 @@
 FROM vimagick/alpine-arm
 MAINTAINER kev <noreply@datageek.info>
 
-RUN apk add -U bash \
-               build-base \
-               nodejs \
-               python \
-               python-dev \
+RUN set -xe \
+    && apk add -U bash \
+                  build-base \
+                  nodejs \
+                  python \
+                  python-dev \
     && npm install -g node-red node-red-admin \
     && apk del build-base \
                python-dev \