angular-cn/tools/ngcontainer/README.md

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# ngcontainer
This docker container provides everything needed to build and test Angular applications:
- node 10.9.0
- npm 6.2.0
- yarn 1.9.2
- Java 8 (for Closure Compiler and Bazel)
- Bazel build tool v0.17.1 - http://bazel.build
- Google Chrome 69.0.3497.81
- Mozilla Firefox 47.0.1
- xvfb (virtual framebuffer) for headless testing
- Brotli compression utility, making smaller files than gzip
By using this, you avoid installation steps in your CI scripts and get a more consistent dev environment.
## Example
See https://github.com/angular/closure-demo/blob/master/.circleci/config.yml
where this container is used in CircleCI.
To run locally:
```
$ docker run -it --rm angular/ngcontainer
```
## Running tests
Any program that needs to talk to a browser (eg. protractor) should be run under xvfb when executing on a headless machine like on CI. The nice way to factor this is to have your top-level test command which you run locally:
```
$ yarn test
```
Then in your CI configuration, you'd run
```
$ xvfb-run -a yarn test
```
## For Developers
Install Docker on your machine in order to build/pull/push this image.
Get the teamangular password from http://valentine and log in:
`$ docker login`
Publish a new version:
`$ tools/ngcontainer/publish.sh [tag eg. 0.2.3]`