diff --git a/2.4/alpine3.10/Dockerfile b/2.4/alpine3.10/Dockerfile
index 3251bb268..0d8ad7728 100644
--- a/2.4/alpine3.10/Dockerfile
+++ b/2.4/alpine3.10/Dockerfile
@@ -121,16 +121,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.4/alpine3.11/Dockerfile b/2.4/alpine3.11/Dockerfile
index 65508ec3d..063754cd2 100644
--- a/2.4/alpine3.11/Dockerfile
+++ b/2.4/alpine3.11/Dockerfile
@@ -121,16 +121,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.4/buster/Dockerfile b/2.4/buster/Dockerfile
index 7cb34416d..1ecd8300d 100644
--- a/2.4/buster/Dockerfile
+++ b/2.4/buster/Dockerfile
@@ -80,16 +80,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.4/buster/slim/Dockerfile b/2.4/buster/slim/Dockerfile
index 0cc5b7af3..fbe217322 100644
--- a/2.4/buster/slim/Dockerfile
+++ b/2.4/buster/slim/Dockerfile
@@ -106,16 +106,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.4/stretch/Dockerfile b/2.4/stretch/Dockerfile
index 7321ea9b0..61eeb47f1 100644
--- a/2.4/stretch/Dockerfile
+++ b/2.4/stretch/Dockerfile
@@ -80,16 +80,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.4/stretch/slim/Dockerfile b/2.4/stretch/slim/Dockerfile
index aabd30346..cda7d3db9 100644
--- a/2.4/stretch/slim/Dockerfile
+++ b/2.4/stretch/slim/Dockerfile
@@ -105,16 +105,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.5/alpine3.10/Dockerfile b/2.5/alpine3.10/Dockerfile
index 5175e0a32..58839f007 100644
--- a/2.5/alpine3.10/Dockerfile
+++ b/2.5/alpine3.10/Dockerfile
@@ -121,16 +121,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.5/alpine3.11/Dockerfile b/2.5/alpine3.11/Dockerfile
index b52762cac..5f6221819 100644
--- a/2.5/alpine3.11/Dockerfile
+++ b/2.5/alpine3.11/Dockerfile
@@ -121,16 +121,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.5/buster/Dockerfile b/2.5/buster/Dockerfile
index 7e2b1ba01..d6f4a4995 100644
--- a/2.5/buster/Dockerfile
+++ b/2.5/buster/Dockerfile
@@ -80,16 +80,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.5/buster/slim/Dockerfile b/2.5/buster/slim/Dockerfile
index b88a44721..600f0879e 100644
--- a/2.5/buster/slim/Dockerfile
+++ b/2.5/buster/slim/Dockerfile
@@ -106,16 +106,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.5/stretch/Dockerfile b/2.5/stretch/Dockerfile
index 53d033686..acc9c6071 100644
--- a/2.5/stretch/Dockerfile
+++ b/2.5/stretch/Dockerfile
@@ -80,16 +80,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.5/stretch/slim/Dockerfile b/2.5/stretch/slim/Dockerfile
index cc662a43f..cf6a31990 100644
--- a/2.5/stretch/slim/Dockerfile
+++ b/2.5/stretch/slim/Dockerfile
@@ -105,16 +105,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.6/alpine3.10/Dockerfile b/2.6/alpine3.10/Dockerfile
index ad381731f..002cdac27 100644
--- a/2.6/alpine3.10/Dockerfile
+++ b/2.6/alpine3.10/Dockerfile
@@ -117,16 +117,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.6/alpine3.11/Dockerfile b/2.6/alpine3.11/Dockerfile
index 80a4896ca..a1705f409 100644
--- a/2.6/alpine3.11/Dockerfile
+++ b/2.6/alpine3.11/Dockerfile
@@ -117,16 +117,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.6/buster/Dockerfile b/2.6/buster/Dockerfile
index d51ee8641..c933cbd4f 100644
--- a/2.6/buster/Dockerfile
+++ b/2.6/buster/Dockerfile
@@ -76,16 +76,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.6/buster/slim/Dockerfile b/2.6/buster/slim/Dockerfile
index 94c9740bd..c22da5c66 100644
--- a/2.6/buster/slim/Dockerfile
+++ b/2.6/buster/slim/Dockerfile
@@ -102,16 +102,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.6/stretch/Dockerfile b/2.6/stretch/Dockerfile
index 15b3049bd..7e1988b4c 100644
--- a/2.6/stretch/Dockerfile
+++ b/2.6/stretch/Dockerfile
@@ -76,16 +76,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.6/stretch/slim/Dockerfile b/2.6/stretch/slim/Dockerfile
index 6e9bd98cc..524cb9fd2 100644
--- a/2.6/stretch/slim/Dockerfile
+++ b/2.6/stretch/slim/Dockerfile
@@ -101,16 +101,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.7/alpine3.10/Dockerfile b/2.7/alpine3.10/Dockerfile
index 9fea344b0..26a0394a6 100644
--- a/2.7/alpine3.10/Dockerfile
+++ b/2.7/alpine3.10/Dockerfile
@@ -117,16 +117,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.7/alpine3.11/Dockerfile b/2.7/alpine3.11/Dockerfile
index 34197588b..31f09e31a 100644
--- a/2.7/alpine3.11/Dockerfile
+++ b/2.7/alpine3.11/Dockerfile
@@ -117,16 +117,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.7/buster/Dockerfile b/2.7/buster/Dockerfile
index 53d79a952..fbe54e26d 100644
--- a/2.7/buster/Dockerfile
+++ b/2.7/buster/Dockerfile
@@ -76,16 +76,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/2.7/buster/slim/Dockerfile b/2.7/buster/slim/Dockerfile
index c7622cabc..470a521e1 100644
--- a/2.7/buster/slim/Dockerfile
+++ b/2.7/buster/slim/Dockerfile
@@ -102,16 +102,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index e3c1aea53..8b46d6afc 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -121,16 +121,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 7321e22dc..33314a135 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -80,16 +80,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]
diff --git a/Dockerfile-slim.template b/Dockerfile-slim.template
index 95ff01a24..e286ccc34 100644
--- a/Dockerfile-slim.template
+++ b/Dockerfile-slim.template
@@ -106,16 +106,12 @@ RUN set -eux; \
 	gem --version; \
 	bundle --version
 
-# install things globally, for great justice
-# and don't create ".bundle" in all our apps
+# don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV GEM_PATH $GEM_HOME/ruby/$RUBY_MAJOR.0:$GEM_PATH
-ENV BUNDLE_PATH="$GEM_HOME" \
-	BUNDLE_SILENCE_ROOT_WARNING=1 \
+ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
 	BUNDLE_APP_CONFIG="$GEM_HOME"
-ENV PATH $GEM_HOME/bin:$GEM_HOME/ruby/$RUBY_MAJOR.0/bin:$PATH
+ENV PATH $GEM_HOME/bin:$PATH
 # adjust permissions of a few directories for running "gem install" as an arbitrary user
 RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
-# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
 
 CMD [ "irb" ]