Buildpacks

#docker #containers #paas

• Doc here: https://buildpacks.io/docs/buildpack-author-guide/create-buildpack/
• Intro (slides): https://docs.google.com/presentation/d/13j_Im9ZLPpAKmQmMSkkeZS9e4Tebhjc_bz8yTF8dR_w/edit#slide=id.p1

Lifecycle

A buildback has the following components:

• detect: script (typically, shell-script)
• build: same (also: installs the environment, etc.)
• buildpack.toml: metadata for the buildback

It generates, for a given application:

• A “layer” (= the “compiled” application)
• A launch.toml metadata file, similar to:

[[processes]]
type = "web"
command = "bundle exec ruby app.rb"
default = true

• A SBOM (see: https://buildpacks.io/docs/buildpack-author-guide/create-buildpack/adding-bill-of-materials/)

Buildpacks are composable: https://buildpacks.io/docs/buildpack-author-guide/build-phases-overview/

Page last modified: 2023-03-08 11:32:44