Dockerfile

# Copyright 2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

FROM node:18-slim

# Create and change to the app directory
WORKDIR /usr/src/app

# Copy application dependency manifests to the container image
# A wildcard is used to ensure copying both package.json AND package-lock.json (when available)
# Copying this first prevents re-running npm install on every code change
COPY package*.json ./

# Install production dependencies
# If you add a package-lock.json, speed your build by switching to 'npm ci'
# RUN npm ci --only=production
RUN npm install --only=production --omit=dev

# Copy local code to the container image
COPY . ./

# Run the web service on container startup
CMD ["npm", "start"]