diff --git a/2.0/Dockerfile b/2.0/Dockerfile
index 702c10dbb2..5cbeeb45f3 100644
--- a/2.0/Dockerfile
+++ b/2.0/Dockerfile
@@ -35,7 +35,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.0/slim/Dockerfile b/2.0/slim/Dockerfile
index 9f3190a9af..2a66bafdca 100644
--- a/2.0/slim/Dockerfile
+++ b/2.0/slim/Dockerfile
@@ -63,7 +63,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.1/Dockerfile b/2.1/Dockerfile
index 55c97bb25a..896221633a 100644
--- a/2.1/Dockerfile
+++ b/2.1/Dockerfile
@@ -35,7 +35,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.1/slim/Dockerfile b/2.1/slim/Dockerfile
index 585e8451b6..64a349b09e 100644
--- a/2.1/slim/Dockerfile
+++ b/2.1/slim/Dockerfile
@@ -63,7 +63,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.2/Dockerfile b/2.2/Dockerfile
index a0dd8d753b..949757ef4d 100644
--- a/2.2/Dockerfile
+++ b/2.2/Dockerfile
@@ -35,7 +35,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.2/slim/Dockerfile b/2.2/slim/Dockerfile
index be69ba2bb3..0b5b83ef87 100644
--- a/2.2/slim/Dockerfile
+++ b/2.2/slim/Dockerfile
@@ -63,7 +63,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.3/Dockerfile b/2.3/Dockerfile
index 4d848354e2..c54f74b79b 100644
--- a/2.3/Dockerfile
+++ b/2.3/Dockerfile
@@ -35,7 +35,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
diff --git a/2.3/slim/Dockerfile b/2.3/slim/Dockerfile
index 4abb8ced35..5286086912 100644
--- a/2.3/slim/Dockerfile
+++ b/2.3/slim/Dockerfile
@@ -63,7 +63,8 @@ ENV BUNDLER_VERSION 1.11.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION" \
 	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin"
+	&& bundle config --global bin "$GEM_HOME/bin" \
+  && bundle config --global silence_root_warning true
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME