Dockerfile

FROM node:12

ENV PORT 800

# Create app directory
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

# Installing dependencies
COPY package*.json /usr/src/app/
RUN npm install

# Copying source files
COPY . /usr/src/app

# Building app
EXPOSE 3000

# Running the app
CMD "npm" "start"