anchor.diff:      \
       # Verify nodejs authenticity
       grep ${NODE_VERSION}-${ARCHITECTURE}.tar.gz SHASUMS256.txt.asc | shasum -a 256 -c - && \
  +    export GNUPGHOME="$(mktemp -d)" && \
       gpg --keyserver pool.sks-keyservers.net --recv-keys 9554F04D7259F04124DE6B476D5A82AC7E37093B && \
       gpg --keyserver pool.sks-keyservers.net --recv-keys 94AE36675C464D64BAFA68DD7434390BDBE9B9C5 && \
       gpg --keyserver pool.sks-keyservers.net --recv-keys FD3A5288F042B6850C66B31F09FE44734EB7990E && \
  
positive.code: FROM debian:wheezy
  MAINTAINER wefork
  
  ENV BUILD_DEPS="wget curl bzip2 build-essential python git"
  ARG NODE_VERSION=v0.10.48
  ARG METEOR_RELEASE=1.3.5.1
  ARG NPM_VERSION=3.10.10
  
negative.code: ARG SRC_PATH=./
  
  # Copy the app to the image
  COPY ${SRC_PATH} /home/wekan/app
  
  RUN \
      # Add non-root user wekan
      useradd --user-group --system --home-dir /home/wekan wekan && \
      \
      # OS dependencies
      apt-get update -y && apt-get install -y --no-install-recommends ${BUILD_DEPS} && \
      \
      # Gosu installation
      GOSU_ARCHITECTURE="$(dpkg --print-architecture | awk -F- '{ print $NF }')" && \
      wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-${GOSU_ARCHITECTURE}" && \
      wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-${GOSU_ARCHITECTURE}.asc" && \
      export GNUPGHOME="$(mktemp -d)" && \
      gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 && \
      gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu && \
      rm -R "$GNUPGHOME" /usr/local/bin/gosu.asc && \
      chmod +x /usr/local/bin/gosu && \
      \
      # Download nodejs
      wget https://nodejs.org/dist/${NODE_VERSION}/node-${NODE_VERSION}-${ARCHITECTURE}.tar.gz && \
  