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# syntax=docker/dockerfile:1
# Comments are provided throughout this file to help you get started.
# If you need more help, visit the Dockerfile reference guide at
# https://docs.docker.com/engine/reference/builder/
ARG NODE_VERSION=18
FROM node:${NODE_VERSION}-alpine
# Use production node environment by default.
ENV NODE_ENV production
WORKDIR /usr/src/app
# Download dependencies as a separate step to take advantage of Docker's caching.
# Leverage a cache mount to /root/.npm to speed up subsequent builds.
# Leverage a bind mounts to package.json and package-lock.json to avoid having to copy them into
# into this layer.
RUN --mount=type=bind,source=package.json,target=package.json \
--mount=type=bind,source=package-lock.json,target=package-lock.json \
--mount=type=cache,target=/root/.npm \
npm ci --omit=dev
# Run the application as a non-root user.
USER node
# Copy the rest of the source files into the image.
COPY . /usr/src/app
# Expose the port that the application listens on.
EXPOSE 7860
# Run the application.
CMD node build
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