diff --git a/node/content.md b/node/content.md index 416f8e1f3..b52b85703 100644 --- a/node/content.md +++ b/node/content.md @@ -12,65 +12,4 @@ Node.js internally uses the Google V8 JavaScript engine to execute code; a large # How to use this image -## Create a `Dockerfile` in your Node.js app project - -```dockerfile -FROM node:4-onbuild -# replace this with your application's default port -EXPOSE 8888 -``` - -You can then build and run the Docker image: - -```console -$ docker build -t my-nodejs-app . -$ docker run -it --rm --name my-running-app my-nodejs-app -``` - -### Notes - -The image assumes that your application has a file named [`package.json`](https://docs.npmjs.com/files/package.json) listing its dependencies and defining its [start script](https://docs.npmjs.com/misc/scripts#default-values). - -It also assumes that you have a file named [`.dockerignore`](https://docs.docker.com/engine/reference/builder/#/dockerignore-file) otherwise it will copy your local npm modules: - - node_modules - -We have assembled a [Best Practices Guide](https://github.com/nodejs/docker-node/blob/master/docs/BestPractices.md) for those using these images on a daily basis. - -All of the images contain pre-installed versions of `node`, [`npm`](https://www.npmjs.com/), and [`yarn`](https://yarnpkg.com). For each supported architecture, the supported variants are different. In the file [architectures](https://github.com/nodejs/docker-node/blob/master/architectures), it lists all supported variants for all of the architectures that we support now. - -## Run a single Node.js script - -For many simple, single file projects, you may find it inconvenient to write a complete `Dockerfile`. In such cases, you can run a Node.js script by using the Node.js Docker image directly: - -```console -$ docker run -it --rm --name my-running-script -v "$PWD":/usr/src/app -w /usr/src/app node:4 node your-daemon-or-script.js -``` - -## Verbosity - -By default the Node.js Docker Image has npm log verbosity set to `info` instead of the default `warn`. This is because of the way Docker is isolated from the host operating system and you are not guaranteed to be able to retrieve the `npm-debug.log` file when npm fails. - -When npm fails, it writes it's verbose log to a log file inside the container. If npm fails during an install when building a Docker Image with the `docker build` command, this log file will become inaccessible when Docker exits. - -The Docker Working Group have chosen to be overly verbose during a build to provide an easy audit trail when install fails. If you prefer npm to be less verbose you can easily reset the verbosity of npm using the following techniques: - -### Dockerfile - -If you create your own `Dockerfile` which inherits from the `node` image you can simply use `ENV` to override `NPM_CONFIG_LOGLEVEL`. - - FROM node - ENV NPM_CONFIG_LOGLEVEL warn - ... - -### Docker Run - -If you run the node image using `docker run` you can use the `-e` flag to override `NPM_CONFIG_LOGLEVEL`. - - $ docker run -e NPM_CONFIG_LOGLEVEL=warn node ... - -### NPM run - -If you are running npm commands you can use `--loglevel` to control the verbosity of the output. - - $ docker run node npm --loglevel=warn ... +See [How To Use This Image](https://github.com/nodejs/docker-node/blob/master/README.md#how-to-use-this-image) on GitHub for up-to-date documentation.