Node.js Dockerfile example

Dockerfile

FROM node:10.16-alpine

WORKDIR /opt/app

ARG NODE_ENV=production
ARG NODE_PATH=./lib
ARG NPM_TOKEN
ARG REVISION
ARG VERSION

ENV NODE_ENV=$NODE_ENV \
  NODE_PATH=$NODE_PATH \
  PATH=/opt/node_modules/.bin:$PATH \
  PORT=3000 \
  REVISION=$REVISION \
  VERSION=$VERSION

COPY --chown=node:node ./package.json ./package-lock.json /opt/

RUN apk add --update --no-cache tini \
  && apk add --no-cache curl \
  && apk add --no-cache --virtual .build-dependencies make gcc g++ python \
  && cd /opt \
  && echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" >> .npmrc \
  && npm config ls \
  && npm i -g [email protected] \
  && npm ci --silent --progress=false \
  && npm cache clean --force \
  && chown -R node:node /opt/app \
  && chown -R node:node /opt/node_modules \
  && apk del .build-dependencies \
  && rm -rf yarn* \
  && rm .npmrc

COPY --chown=node:node . /opt/app

EXPOSE 3000 9229 9230

# Simple http endpoint reports 200 OK on database, transport and cacher connections
# Also useful for exposing $REVISION and $VERSION as well as broker NODE_ID
HEALTHCHECK --interval=5s --timeout=3s --start-period=10s --retries=3 \
  CMD curl -fs http://0.0.0.0:3000/heartbeat || exit 1

USER node

ENTRYPOINT ["/sbin/tini", "--"]
CMD ["node", "-r", "make-promises-safe", "index.js"]