In my previous post, I talked about how to use the PHP Cloud Native buildpacks. It was not super tricky but required some manual work to set up. This is because the PHP CNBs were not, at the time, part of an official builder.

What’s a builder? It’s basically an image containing a bunch of CNBs, all ready for your use. See this link for more details.

If you are to run pack suggest-builders, then you will see the list of official builders. At the time of writing, that is Heroku, Cloud Foundry (bionic) and Cloud Foundry (cflinuxfs3).

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At work, I’ve been helping to rewrite the PHP buildpack as a set of Cloud Native Buildpacks. The PHP CNBs are coming together, current quality is alpha, but I think they’re ready enough for people to try them out and report how they work for you. This post has instructions and a demo to use the PHP CNBs.

But first, a slight digression.

A little about the architecture of the PHP CNBs. The previous PHP buildpack has been decomposed into a set of five PHP CNBs, two of which are optional. There are php-cnb, php-composer-cnb, httpd-cnb, nginx-cnb and php-web-cnb.

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In the past, I’ve worked with buildpacks through my time using Cloud Foundry. Cloud Foundry has first class support for buildpacks, which allows you to push code and let the buildpack handle the messy parts of actually running your code. Things like installing a language runtime, installing servers, etc…

Recently the buildpacks world has expanded with the CNCF’s acceptance of the Cloud Native Buildpacks project into the CNCF sandbox (sometimes called v3 buildpacks). In addition to an excellent and easily readable spec, this work brings us the pack CLI tool, which allows you to run Cloud Native Buildpacks on your local PC and easily deploy the output, which is an OCI image, to Docker or anywhere else you can run an OCI image.

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