Merge pull request #1120 from mythmon/npm5

Use npm5 and add a lock file.

docs/dev/recipe-server/install.rst

@@ -9,7 +9,7 @@ This guide assumes you have already installed and set up the following:
 
 1. Git_
 2. `Python 3.6`_, `pip 8`_ or higher, and virtualenv_
-3. `Node.js`_ and npm.
+3. `Node.js 8`_ and NPM 5.
 4. `Postgres 9.4`_
 5. ``openssl``
 

recipe-server/Dockerfile

@@ -8,10 +8,10 @@ RUN apt-get update && \
 
 # Install node from NodeSource
 RUN curl -s https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - && \
-    echo 'deb https://deb.nodesource.com/node_4.x jessie main' > /etc/apt/sources.list.d/nodesource.list && \
-    echo 'deb-src https://deb.nodesource.com/node_4.x jessie main' >> /etc/apt/sources.list.d/nodesource.list && \
+    echo 'deb https://deb.nodesource.com/node_8.x jessie main' > /etc/apt/sources.list.d/nodesource.list && \
+    echo 'deb-src https://deb.nodesource.com/node_8.x jessie main' >> /etc/apt/sources.list.d/nodesource.list && \
     apt-get update && apt-get install -y nodejs
-RUN npm install -g npm@3.x.x
+RUN npm install -g npm@5
 
 COPY ./requirements /app/requirements
 COPY ./package.json /app/package.json