add Node Version Manager (nvm)

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

workspace/Dockerfile

@@ -46,25 +46,11 @@ RUN apt-get update && apt-get install -y --force-yes \
         git \
         curl \
         vim \
-        nano \
-        nodejs \
-        nodejs-dev \
-        npm
+        nano
 
 # Clean up, to free some space
 RUN apt-get clean
 
-# Install gulp and bower with NPM
-RUN npm install -g \
-    gulp \
-    bower
-
-# Link the global gulp to be used locally
-RUN npm link gulp
-
-# Add a symbolic link for Node
-RUN ln -s /usr/bin/nodejs /usr/bin/node
-
 # Add an alias for PHPUnit
 RUN echo "alias phpunit='./vendor/bin/phpunit'" >> ~/.bashrc
 
@@ -77,6 +63,18 @@ RUN curl -s http://getcomposer.org/installer | php \
 RUN pecl install mongodb
 RUN echo "extension=mongodb.so" >> /etc/php/7.0/cli/php.ini
 
+# Install nvm (Node Version Manager)
+RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.31.1/install.sh | bash
+
+ENV NVM_DIR=/root/.nvm
+
+# Install stable node
+RUN . ~/.nvm/nvm.sh \
+    && nvm install stable \
+    && nvm use stable \
+    && nvm alias stable \
+    && npm install -g gulp bower
+
 # Source the bash
 RUN . ~/.bashrc