pack

Use Pack to build container images

Author: Gareth Rushgrove

Build container images using pack and buildpacks.

Usage

This extension adds the pack function, which is used the same way as docker_build to allow Tilt to automatically build a container image with a known name. For instance the following example shows building an image using the default builder and having that image automatically deployed to Kubernetes.

load('ext://pack', 'pack')

pack('example-image')
k8s_yaml('kubernetes.yaml')
k8s_resource('example-deployment', port_forwards=8000)

The pack function can take a few arguments:

• name: name of the image to be built
• path: path to application directory, defaults to the current working directory
• builder: builder image, defaults to gcr.io/paketo-buildpacks/builder:base
• buildpacks: a list of buildpacks to use. (list[str])
• env_vars: a list of environment variables. (list[str])

The function also supports all of the properties of custom_build so you can ignore files, override the entrypoint or set live updates as usual.

For instance, if you want to use the tiny builder instead of the default Paketo one, you would do the following:

pack(
  'example-image',
  builder='gcr.io/paketo-buildpacks/builder:tiny'
)

Requirements

• The pack binary must be on your path.