Dockerfile for node.js app

docker-entrypoint.sh

#!/bin/bash
# Wrapper around shell exec to copy the passed in config value.
# We can move this functionality directly into the app if we deploy.
set -e

if [ ! -z "$CONFIG_TYPE" ]; then
	echo "Using $CONFIG_TYPE config"
	cp /opt/app/config/${CONFIG_TYPE}.json /opt/app/config/local.json
fi

eval $@

Dockerfile

# Dockerfile to run node app
# VERSION 1 - EDITION 2

# Base image used is Ubuntu 14.04 LTS
FROM ubuntu:14.04

MAINTAINER me

# Install wget
RUN apt-get update && apt-get install -y \
		wget \
		git \
    build-essential \
		python

# Install Node.js and npm
ENV NODE_VER 0.10.26

RUN wget http://nodejs.org/dist/v$NODE_VER/node-v$NODE_VER-linux-x64.tar.gz
RUN tar xfvz node-v$NODE_VER-linux-x64.tar.gz -C /usr/local
RUN ln -s /usr/local/node-v$NODE_VER-linux-x64/bin/node /usr/local/bin/node
RUN ln -s /usr/local/node-v$NODE_VER-linux-x64/bin/npm /usr/local/bin/npm
RUN mkdir -p /var/log/node

# Install testing tools
RUN npm instal mocha --global
RUN npm instal jshint --global

# Install app dependencies before apps source to avoid rebuilding modules
ADD package.json /tmp/package.json
RUN cd /tmp && npm install && npm prune
RUN mkdir -p /opt/app && cp -a /tmp/node_modules /opt/app

# Bundle app source
ADD . /opt/app

EXPOSE  8080

# Set entrypoint to handle config switching
ADD docker-entrypoint.sh /entrypoint.sh
RUN chmod u+x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

CMD ["node", "/opt/app/server.js"]

Run command

docker run -e CONFIG_TYPE=docker image/name