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# if you're doing anything beyond your local machine, please pin this to a specific version at https://hub.docker.com/_/node/
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FROM node:lts
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# set our node environment, either development or production
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# defaults to production, compose overrides this to development on build and run
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ARG NODE_ENV=production
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ENV NODE_ENV $NODE_ENV
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WORKDIR /code
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# default to port 80 for node, and 9229 and 9230 (tests) for debug
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ARG PORT=80
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ENV PORT $PORT
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EXPOSE $PORT 9229 9230
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COPY package.json /code/package.json
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COPY package-lock.json /code/package-lock.json
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RUN npm ci
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# check every 30s to ensure this service returns HTTP 200
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HEALTHCHECK --interval=30s \
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CMD node healthcheck.js
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# copy in our source code last, as it changes the most
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COPY . /code
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# if you want to use npm start instead, then use `docker run --init in production`
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# so that signals are passed properly. Note the code in index.js is needed to catch Docker signals
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# using node here is still more graceful stopping then npm with --init afaik
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# I still can't come up with a good production way to run with npm and graceful shutdown
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CMD [ "node", "src/index.js" ]
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