content: FROM buildpack-deps
  
  RUN apt-get update -qq && apt-get install -qqy locales
  RUN localedef -i en_US -f UTF-8 en_US.UTF-8
  ENV LANG en_US.UTF-8
  ENV LANGUAGE en_US:en
  ENV LC_ALL en_US.UTF-8
  
  RUN apt-get install -y \
  	ca-certificates curl python-pip gcc libc6-dev make \
  	bzr git mercurial \
  	--no-install-recommends
  RUN pip install docker-py
  
  ENV CLOUDSDK_CORE_DISABLE_PROMPTS=1
  ENV CLOUDSDK_PYTHON_SITEPACKAGES=1
  ADD https://dl.google.com/dl/cloudsdk/release/google-cloud-sdk.tar.gz /gcloud.tar.gz
  RUN mkdir /gcloud && \
    tar -xzf /gcloud.tar.gz --strip 1 -C /gcloud && \
    /gcloud/install.sh && \
    /gcloud/bin/gcloud components update app -q && \
    rm -f /gcloud.tar.gz
  ENV PATH=/gcloud/bin:$PATH
  
  ENV NODE_VERSION 0.10.38
  ENV NPM_VERSION 2.7.3
  # verify gpg and sha256: http://nodejs.org/dist/v0.10.31/SHASUMS256.txt.asc
  # gpg: aka "Timothy J Fontaine (Work) <tj.fontaine@joyent.com>"
  # gpg: aka "Julien Gilli <jgilli@fastmail.fm>"
  RUN gpg --keyserver pool.sks-keyservers.net --recv-keys 7937DFD2AB06298B2293C3187D33FF9D0246406D 114F43EE0176B71C7BC219DD50A3051F888C628D
  
  RUN curl -SLO "http://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
  	&& curl -SLO "http://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
  	&& gpg --verify SHASUMS256.txt.asc \
  	&& grep " node-v$NODE_VERSION-linux-x64.tar.gz\$" SHASUMS256.txt.asc | sha256sum -c - \
  	&& tar -xzf "node-v$NODE_VERSION-linux-x64.tar.gz" -C /usr/local --strip-components=1 \
  	&& rm "node-v$NODE_VERSION-linux-x64.tar.gz" SHASUMS256.txt.asc \
  	&& npm install -g npm@"$NPM_VERSION" \
  	&& npm cache clear
  
  RUN npm install -g gulp bower
  
  ENV GOLANG_VERSION 1.4.2
  
  RUN curl -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz \
  		| tar -C /usr/src -xz
  
  RUN cd /usr/src/go/src && ./make.bash --no-clean > /dev/null
  
  ENV PATH /usr/src/go/bin:$PATH
  
  RUN mkdir -p /go/src
  ENV GOPATH /go
  ENV PATH /go/bin:$PATH
  WORKDIR /go
  
  