Dockerfile

FROM node:8
MAINTAINER Paris Kasidiaris <paris@sourcelair.com>

# Set the working directory
WORKDIR /usr/src/app

# Set an entrypoint, to automatically install node modules
ENTRYPOINT ["/bin/bash", "-c", "if [[ ! -d node_modules ]]; then npm install; fi; exec \"${@:0}\";"]
CMD ["npm", "run", "start"]

# First, install dependencies to improve layer caching
COPY package.json /usr/src/app/
RUN npm install

# Add the code
COPY . /usr/src/app

# Run the tests and build, to make sure everything is working nicely
RUN npm run build && npm run test