diff --git a/2.0/Dockerfile b/2.0/Dockerfile
index efaac98f2..0e5a45c05 100644
--- a/2.0/Dockerfile
+++ b/2.0/Dockerfile
@@ -5,6 +5,9 @@ ENV RUBY_VERSION 2.0.0-p645
 ENV RUBY_DOWNLOAD_SHA256 5e9f8effffe97cba5ef0015feec6e1e5f3bacf6ace78cd1cdf72708cd71cf4ab
 ENV RUBYGEMS_VERSION 2.4.8
 
+# skip installing gem documentation
+RUN echo 'install: --no-document\nupdate: --no-document' > "$HOME/.gemrc"
+
 # some of ruby's build scripts are written in ruby
 # we purge this later to make sure our final image uses what we just built
 RUN apt-get update \
@@ -21,12 +24,9 @@ RUN apt-get update \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& apt-get purge -y --auto-remove bison libgdbm-dev ruby \
-	&& gem update --no-document --system $RUBYGEMS_VERSION \
+	&& gem update --system $RUBYGEMS_VERSION \
 	&& rm -r /usr/src/ruby
 
-# skip installing gem documentation
-RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
-
 # install things globally, for great justice
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH
diff --git a/2.0/slim/Dockerfile b/2.0/slim/Dockerfile
index daafec6c9..260b37afc 100644
--- a/2.0/slim/Dockerfile
+++ b/2.0/slim/Dockerfile
@@ -17,6 +17,9 @@ ENV RUBY_MAJOR 2.0
 ENV RUBY_VERSION 2.0.0-p645
 ENV RUBYGEMS_VERSION 2.4.8
 
+# skip installing gem documentation
+RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
+
 # some of ruby's build scripts are written in ruby
 # we purge this later to make sure our final image uses what we just built
 RUN buildDeps=' \
@@ -45,13 +48,10 @@ RUN buildDeps=' \
 	&& ./configure --disable-install-doc \
 	&& make -j"$(nproc)" \
 	&& make install \
-	&& gem update --no-document --system $RUBYGEMS_VERSION \
+	&& gem update --system $RUBYGEMS_VERSION \
 	&& rm -r /usr/src/ruby \
 	&& apt-get purge -y --auto-remove $buildDeps
 
-# skip installing gem documentation
-RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
-
 # install things globally, for great justice
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH
diff --git a/2.1/Dockerfile b/2.1/Dockerfile
index c7c250a21..7de51de2d 100644
--- a/2.1/Dockerfile
+++ b/2.1/Dockerfile
@@ -5,6 +5,9 @@ ENV RUBY_VERSION 2.1.6
 ENV RUBY_DOWNLOAD_SHA256 1e1362ae7427c91fa53dc9c05aee4ee200e2d7d8970a891c5bd76bee28d28be4
 ENV RUBYGEMS_VERSION 2.4.8
 
+# skip installing gem documentation
+RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
+
 # some of ruby's build scripts are written in ruby
 # we purge this later to make sure our final image uses what we just built
 RUN apt-get update \
@@ -21,12 +24,9 @@ RUN apt-get update \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& apt-get purge -y --auto-remove bison libgdbm-dev ruby \
-	&& gem update --no-document --system $RUBYGEMS_VERSION \
+	&& gem update --system $RUBYGEMS_VERSION \
 	&& rm -r /usr/src/ruby
 
-# skip installing gem documentation
-RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
-
 # install things globally, for great justice
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH
diff --git a/2.1/slim/Dockerfile b/2.1/slim/Dockerfile
index 74360bcb4..e12b1177e 100644
--- a/2.1/slim/Dockerfile
+++ b/2.1/slim/Dockerfile
@@ -17,6 +17,9 @@ ENV RUBY_MAJOR 2.1
 ENV RUBY_VERSION 2.1.6
 ENV RUBYGEMS_VERSION 2.4.8
 
+# skip installing gem documentation
+RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
+
 # some of ruby's build scripts are written in ruby
 # we purge this later to make sure our final image uses what we just built
 RUN buildDeps=' \
@@ -45,13 +48,10 @@ RUN buildDeps=' \
 	&& ./configure --disable-install-doc \
 	&& make -j"$(nproc)" \
 	&& make install \
-	&& gem update --no-document --system $RUBYGEMS_VERSION \
+	&& gem update --system $RUBYGEMS_VERSION \
 	&& rm -r /usr/src/ruby \
 	&& apt-get purge -y --auto-remove $buildDeps
 
-# skip installing gem documentation
-RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
-
 # install things globally, for great justice
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH
diff --git a/2.2/Dockerfile b/2.2/Dockerfile
index 42f9a7234..876f4f7b7 100644
--- a/2.2/Dockerfile
+++ b/2.2/Dockerfile
@@ -5,6 +5,9 @@ ENV RUBY_VERSION 2.2.2
 ENV RUBY_DOWNLOAD_SHA256 5ffc0f317e429e6b29d4a98ac521c3ce65481bfd22a8cf845fa02a7b113d9b44
 ENV RUBYGEMS_VERSION 2.4.8
 
+# skip installing gem documentation
+RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
+
 # some of ruby's build scripts are written in ruby
 # we purge this later to make sure our final image uses what we just built
 RUN apt-get update \
@@ -21,12 +24,9 @@ RUN apt-get update \
 	&& make -j"$(nproc)" \
 	&& make install \
 	&& apt-get purge -y --auto-remove bison libgdbm-dev ruby \
-	&& gem update --no-document --system $RUBYGEMS_VERSION \
+	&& gem update --system $RUBYGEMS_VERSION \
 	&& rm -r /usr/src/ruby
 
-# skip installing gem documentation
-RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
-
 # install things globally, for great justice
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH
diff --git a/2.2/slim/Dockerfile b/2.2/slim/Dockerfile
index 0f4aa80de..ac87ecced 100644
--- a/2.2/slim/Dockerfile
+++ b/2.2/slim/Dockerfile
@@ -17,6 +17,9 @@ ENV RUBY_MAJOR 2.2
 ENV RUBY_VERSION 2.2.2
 ENV RUBYGEMS_VERSION 2.4.8
 
+# skip installing gem documentation
+RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
+
 # some of ruby's build scripts are written in ruby
 # we purge this later to make sure our final image uses what we just built
 RUN buildDeps=' \
@@ -45,13 +48,10 @@ RUN buildDeps=' \
 	&& ./configure --disable-install-doc \
 	&& make -j"$(nproc)" \
 	&& make install \
-	&& gem update --no-document --system $RUBYGEMS_VERSION \
+	&& gem update --system $RUBYGEMS_VERSION \
 	&& rm -r /usr/src/ruby \
 	&& apt-get purge -y --auto-remove $buildDeps
 
-# skip installing gem documentation
-RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
-
 # install things globally, for great justice
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH