diff --git a/tests/apps/dockerfile-dokku-scale/Dockerfile b/tests/apps/dockerfile-dokku-scale/Dockerfile
index 7deb109af..eee648649 100644
--- a/tests/apps/dockerfile-dokku-scale/Dockerfile
+++ b/tests/apps/dockerfile-dokku-scale/Dockerfile
@@ -1,5 +1,7 @@
 FROM node:4-alpine
 
+RUN apk add --no-cache bash
+
 EXPOSE 3001/udp
 EXPOSE  3000/tcp
 EXPOSE 3003
diff --git a/tests/apps/dockerfile-noexpose/Dockerfile b/tests/apps/dockerfile-noexpose/Dockerfile
index 4bf4105fe..61aa17519 100644
--- a/tests/apps/dockerfile-noexpose/Dockerfile
+++ b/tests/apps/dockerfile-noexpose/Dockerfile
@@ -1,5 +1,7 @@
 FROM node:4-alpine
 
+RUN apk add --no-cache bash
+
 COPY . /app
 WORKDIR /app
 RUN npm install
diff --git a/tests/apps/dockerfile-procfile-bad/Dockerfile b/tests/apps/dockerfile-procfile-bad/Dockerfile
index 7deb109af..eee648649 100644
--- a/tests/apps/dockerfile-procfile-bad/Dockerfile
+++ b/tests/apps/dockerfile-procfile-bad/Dockerfile
@@ -1,5 +1,7 @@
 FROM node:4-alpine
 
+RUN apk add --no-cache bash
+
 EXPOSE 3001/udp
 EXPOSE  3000/tcp
 EXPOSE 3003
diff --git a/tests/apps/dockerfile-procfile/Dockerfile b/tests/apps/dockerfile-procfile/Dockerfile
index 7deb109af..eee648649 100644
--- a/tests/apps/dockerfile-procfile/Dockerfile
+++ b/tests/apps/dockerfile-procfile/Dockerfile
@@ -1,5 +1,7 @@
 FROM node:4-alpine
 
+RUN apk add --no-cache bash
+
 EXPOSE 3001/udp
 EXPOSE  3000/tcp
 EXPOSE 3003
diff --git a/tests/apps/dockerfile/Dockerfile b/tests/apps/dockerfile/Dockerfile
index f6116d259..eef0c10e8 100644
--- a/tests/apps/dockerfile/Dockerfile
+++ b/tests/apps/dockerfile/Dockerfile
@@ -1,5 +1,7 @@
 FROM node:4-alpine
 
+RUN apk add --no-cache bash
+
 EXPOSE 3001/udp
 EXPOSE  3000/tcp
 EXPOSE 3003