Dockerfile

First let's setup a .dockerignore file to prevent our docker build command from copying our node_modules directory into the image.

/.dockerignore

node_modules

Now we can create our Dockerfile:

/Dockerfile

FROM node:alpine AS builder

WORKDIR /app

RUN adduser -S bot

COPY package.json .

RUN npm install

COPY . .

RUN npm run build

#
# Change to a less-privileged user than root in the
# event a request escapes the sandbox
#
USER bot

#
# Starts the bot when the docker container is started
#
ENTRYPOINT ["npm", "start"]