Dockerfile

# 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/go/dockerfile-reference/

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ARG NODE_VERSION=24.14.0

################################################################################
# Use node image for base image for all stages.
FROM node:${NODE_VERSION}-alpine

# Set working directory for all build stages.
WORKDIR /home/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 bind mounts to package.json and package-lock.json to avoid having to copy them
# 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

# Copy the rest of the source files into the image.
COPY . .

# Run the application.
# Shell form vs Exec form?
# See https://docs.docker.com/reference/build-checks/json-args-recommended/
CMD ["npm", "run", "dev"]