Dockerfile

# Base image
FROM node:slim

# Creating a directory inside the base image and defining as the base directory
WORKDIR /app

# Copying the files of the root directory into the base directory
ADD . /app

RUN  apt-get update \
     && apt-get install -y wget gnupg ca-certificates \
     && wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
     && sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' \
     && apt-get update \
     # We install Chrome to get all the OS level dependencies, but Chrome itself
     # is not actually used as it's packaged in the node puppeteer library.
     # Alternatively, we could could include the entire dep list ourselves
     # (https://github.com/puppeteer/puppeteer/blob/master/docs/troubleshooting.md#chrome-headless-doesnt-launch-on-unix)
     # but that seems too easy to get out of date.
     && apt-get install -y google-chrome-stable \
     && rm -rf /var/lib/apt/lists/* \
     && wget --quiet https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh -O /usr/sbin/wait-for-it.sh \
     && chmod +x /usr/sbin/wait-for-it.sh

# Installing the project dependencies
RUN npm install
RUN npm install pm2 -g
RUN npm audit fix

# Envrionment variables
ENV NODE_ENV production

# Starting the pm2 process and keeping the docker container alive
CMD NODE_ENV=production pm2 start process.yml -i max && tail -f /dev/null

# Exposing the RestAPI port
EXPOSE 5000