Dockerfile

# syntax=docker/dockerfile:1
ARG NODE_VERSION=18

FROM node:${NODE_VERSION}-alpine

# Use production node environment by default.
ENV NODE_ENV production
ENV PORT 7860

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 mkdir -p /data/logs
RUN chown -R node:node /data/logs

# 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
ENV BODY_SIZE_LIMIT=50000000
# Run the application.
CMD node build