Node.js - Production Dockerfile

Dockerfile.node.prod

# Node.js Production Dockerfile 

FROM node:14-alpine

# Update the system
RUN apk --no-cache -U upgrade

# Alpine comes with a non-root user called 'node' with a home directory at /home/node

# Prepare destination directory and ensure user node owns it
RUN mkdir -p /home/node/app && chown -R node:node /home/node/app

# Set CWD
WORKDIR /home/node/app

# Install PM2
RUN npm i -g pm2

# Copy package.json, package-lock.json and process.yml
COPY package*.json process.yml ./

# Switch to user node
USER node

RUN npm i --only=production    

COPY . .

ARG PORT
ENV PORT=${PORT:-3000}

#EXPOSE ${PORT}

# Use PM2 to run the application as stated in config file
ENTRYPOINT ["pm2-runtime", "./process.yml"]