We can build & deploy our own application by using Netlify.

But, sometimes, we want to debug or test the build process in our local environment.

Today, I’ll introduce the “Netlify Build Image” to do this.

Pull the Docker image

The build image of Netlify is published in Dockerhub. So we can pull the images in our local.

$ docker pull netlify/build:xenial

Download the project

We need to download the GitHub repository in our local.

$ git clone git@github.com:netlify/build-image.git
$ cd build-image

We can start and access the container by the command.

$ ./test-tools/start-image.sh path/to/site/repo
buildbot@0605048257f4:/$

And we can run the build command like this.

$ /opt/build-bin/build npm run build

If you want to stop and exit the container, we just run exit command.

We can build the application with cache by the following command.

./test-tools/test-build.sh path/to/site/repo
 Using temp cache dir: tmp/tmp.oJosE3kthn/cache
 Cloning into '/opt/buildhome/repo'…