improvements to ruby gem installation

Dockerfile

@@ -15,26 +15,30 @@ RUN apt-get -y update && apt-get -y install \
 RUN curl -sL https://deb.nodesource.com/setup | bash -
 RUN apt-get install -y nodejs
 
-# install ruby and the SASS rubygem
-RUN apt-get install -y ruby
-RUN gem install sass
-
+# install ruby
+RUN apt-get install -y ruby1.9.1 ruby1.9.1-dev
 
 # add a user
 RUN useradd -ms /bin/bash docker
 
-
 # switch to the docker user
 ENV HOME /home/docker
 USER docker
 
+# configure ruby gems to run from the home directory
+ENV PATH $PATH:/home/docker/.gem/ruby/1.9.1/bin
+
+# install some ruby gems 
+RUN gem install --user-install sass
+RUN gem install --user-install compass
+
 # configure npm to run without sudo permissions
 RUN echo 'prefix=${HOME}/.npm-packages' >> $HOME/.npmrc
 
 ENV NPM_PACKAGES $HOME/.npm-packages
 ENV NODE_PATH $NPM_PACKAGES/lib/node_modules:$NODE_PATH
-ENV PATH $NPM_PACKAGES/bin:$PATH
-ENV MANPATH $NPM_PACKAGES/share/man:$(manpath)
+ENV PATH $PATH:$NPM_PACKAGES/bin
+ENV MANPATH $(manpath):$NPM_PACKAGES/share/man
 
 # install yeoman tooling and other npm packages
 RUN npm install -g node-gyp

mount-data

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+
+# determine the id of the user who invoked this script
+# if sudo was used, the user who invoked sudo 
+if [ ${SUDO_USER} ]
+	then
+		REAL_USER=${SUDO_USER}
+	else
+		REAL_USER=${USER}
+fi 
+
+echo "mounting //localhost_data to /mnt/data with uid:gid ${REAL_USER}:${REAL_USER}"
+mount -t cifs //localhost/_data /mnt/data -o uid=${REAL_USER} -o gid=${REAL_USER} -o forceuid -o forcegid

startup

@@ -91,3 +91,7 @@ echo "> sudo docker run --volumes-from=data-files --rm -it adamarthurryan/mean-d
 echo 
 echo "* or maybe you want another dev server:"
 echo "docker run -d --name=thename --volumes-from=data-files --link=mongodb:mongodb -p=localnum:9000 -p=localnum:34729 -it adamarthurryan/mean-dev"
+
+echo
+echo "* mount the data folder with ./mount-data"
+