Fix non-root support

Sorry, I messed this up in what should've been kind of an obvious way, and now it's much more robust and should actually work properly. 👍

See docker-library/ruby#69 for more context.

Author: tianon

1.7/jdk/Dockerfile

@@ -19,18 +19,17 @@ RUN mkdir -p /opt/jruby/etc \
 		echo 'update: --no-document'; \
 	} >> /opt/jruby/etc/gemrc
 
-RUN gem install bundler \
-	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin" \
-	&& bundle config --global silence_root_warning true
+RUN gem install bundler
 
 # install things globally, for great justice
+# and don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV PATH $GEM_HOME/bin:$PATH
-RUN mkdir -p "$GEM_HOME" \
-	&& chmod 777 "$GEM_HOME"
-
-# don't create ".bundle" in all our apps
-ENV BUNDLE_APP_CONFIG $GEM_HOME
+ENV BUNDLE_PATH="$GEM_HOME" \
+	BUNDLE_BIN="$GEM_HOME/bin" \
+	BUNDLE_SILENCE_ROOT_WARNING=1 \
+	BUNDLE_APP_CONFIG="$GEM_HOME"
+ENV PATH $BUNDLE_BIN:$PATH
+RUN mkdir -p "$GEM_HOME" "$BUNDLE_BIN" \
+	&& chmod 777 "$GEM_HOME" "$BUNDLE_BIN"
 
 CMD [ "irb" ]

1.7/jre/Dockerfile

@@ -19,18 +19,17 @@ RUN mkdir -p /opt/jruby/etc \
 		echo 'update: --no-document'; \
 	} >> /opt/jruby/etc/gemrc
 
-RUN gem install bundler \
-	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin" \
-	&& bundle config --global silence_root_warning true
+RUN gem install bundler
 
 # install things globally, for great justice
+# and don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV PATH $GEM_HOME/bin:$PATH
-RUN mkdir -p "$GEM_HOME" \
-	&& chmod 777 "$GEM_HOME"
-
-# don't create ".bundle" in all our apps
-ENV BUNDLE_APP_CONFIG $GEM_HOME
+ENV BUNDLE_PATH="$GEM_HOME" \
+	BUNDLE_BIN="$GEM_HOME/bin" \
+	BUNDLE_SILENCE_ROOT_WARNING=1 \
+	BUNDLE_APP_CONFIG="$GEM_HOME"
+ENV PATH $BUNDLE_BIN:$PATH
+RUN mkdir -p "$GEM_HOME" "$BUNDLE_BIN" \
+	&& chmod 777 "$GEM_HOME" "$BUNDLE_BIN"
 
 CMD [ "irb" ]

9000/jdk/Dockerfile

@@ -19,18 +19,17 @@ RUN mkdir -p /opt/jruby/etc \
 		echo 'update: --no-document'; \
 	} >> /opt/jruby/etc/gemrc
 
-RUN gem install bundler \
-	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin" \
-	&& bundle config --global silence_root_warning true
+RUN gem install bundler
 
 # install things globally, for great justice
+# and don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV PATH $GEM_HOME/bin:$PATH
-RUN mkdir -p "$GEM_HOME" \
-	&& chmod 777 "$GEM_HOME"
-
-# don't create ".bundle" in all our apps
-ENV BUNDLE_APP_CONFIG $GEM_HOME
+ENV BUNDLE_PATH="$GEM_HOME" \
+	BUNDLE_BIN="$GEM_HOME/bin" \
+	BUNDLE_SILENCE_ROOT_WARNING=1 \
+	BUNDLE_APP_CONFIG="$GEM_HOME"
+ENV PATH $BUNDLE_BIN:$PATH
+RUN mkdir -p "$GEM_HOME" "$BUNDLE_BIN" \
+	&& chmod 777 "$GEM_HOME" "$BUNDLE_BIN"
 
 CMD [ "irb" ]

9000/jre/Dockerfile

@@ -19,18 +19,17 @@ RUN mkdir -p /opt/jruby/etc \
 		echo 'update: --no-document'; \
 	} >> /opt/jruby/etc/gemrc
 
-RUN gem install bundler \
-	&& bundle config --global path "$GEM_HOME" \
-	&& bundle config --global bin "$GEM_HOME/bin" \
-	&& bundle config --global silence_root_warning true
+RUN gem install bundler
 
 # install things globally, for great justice
+# and don't create ".bundle" in all our apps
 ENV GEM_HOME /usr/local/bundle
-ENV PATH $GEM_HOME/bin:$PATH
-RUN mkdir -p "$GEM_HOME" \
-	&& chmod 777 "$GEM_HOME"
-
-# don't create ".bundle" in all our apps
-ENV BUNDLE_APP_CONFIG $GEM_HOME
+ENV BUNDLE_PATH="$GEM_HOME" \
+	BUNDLE_BIN="$GEM_HOME/bin" \
+	BUNDLE_SILENCE_ROOT_WARNING=1 \
+	BUNDLE_APP_CONFIG="$GEM_HOME"
+ENV PATH $BUNDLE_BIN:$PATH
+RUN mkdir -p "$GEM_HOME" "$BUNDLE_BIN" \
+	&& chmod 777 "$GEM_HOME" "$BUNDLE_BIN"
 
 CMD [ "irb" ]