36 lines
1 KiB
Docker
36 lines
1 KiB
Docker
# syntax=docker/dockerfile:1
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# Comments are provided throughout this file to help you get started.
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# If you need more help, visit the Dockerfile reference guide at
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# https://docs.docker.com/engine/reference/builder/
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ARG NODE_VERSION=20.0.0
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FROM node:${NODE_VERSION}-alpine
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# Use production node environment by default.
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ENV NODE_ENV production
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WORKDIR /app
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# Download dependencies as a separate step to take advantage of Docker's caching.
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# Leverage a cache mount to /root/.npm to speed up subsequent builds.
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# Leverage a bind mounts to package.json and package-lock.json to avoid having to copy them into
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# into this layer.
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RUN --mount=type=bind,source=package.json,target=package.json \
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--mount=type=bind,source=package-lock.json,target=package-lock.json \
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--mount=type=cache,target=/root/.npm \
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npm ci --omit=dev
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# Run the application as a non-root user.
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USER root
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# Copy the rest of the source files into the image.
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COPY . .
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# Expose the port that the application listens on.
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EXPOSE 8000
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# Run the application.
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CMD node app.js
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