| # Use the official Node.js 10 image. |
| # https://hub.docker.com/_/node |
| FROM node:10 |
| |
| # 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 both package.json AND package-lock.json are copied. |
| # Copying this separately prevents re-running npm install on every code change. |
| COPY package*.json ./ |
| |
| # Install production dependencies. |
| RUN npm install --only=production |
| |
| # Copy local code to the container image. |
| COPY . . |
| |
| # Service must listen to $PORT environment variable. |
| # This default value facilitates local development. |
| ENV PORT 8080 |
| |
| # Run the web service on container startup. |
| CMD [ "npm", "start" ] |
