apko
Installation
Entrypoint
Types
Apko
Config

apko

Build and Publish OCI Container Images from apk packages

Installation

dagger install github.com/purpleclay/daggerverse/apko@v0.3.1

Entrypoint

Return Type

Apko

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \

func (m *myModule) example() *Apko  {
	return dag.
			Apko()
}

@function
def example() -> dag.Apko:
	return (
		dag.apko()
	)

@func()
example(): Apko {
	return dag
		.apko()
}

Types

Apko 🔗

Apko Dagger Module

load() 🔗

Loads a pre-configured apko configuration file

Return Type

Config !

Arguments

Name	Type	Default Value	Description
cfg	File !	-	the path to the apko configuration file

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \
 load --cfg file:path

func (m *myModule) example(cfg *File) *ApkoConfig  {
	return dag.
			Apko().
			Load(cfg)
}

@function
def example(cfg: dagger.File) -> dag.ApkoConfig:
	return (
		dag.apko()
		.load(cfg)
	)

@func()
example(cfg: File): ApkoConfig {
	return dag
		.apko()
		.load(cfg)
}

withWolfi() 🔗

Generates and loads a pre-configured apko configuration file for building an image based on the Wolfi OS. By default, the [wolfi-base, ca-certificates-bundle] packages will be installed.

Examples:

Generate a default Wolfi OS apko configuration file

$ dagger call with-wolfi –entrypoint=“/bin/sh -l”

Extend the default Wolfi OS apko configuration file

$ dagger call with-wolfi --entrypoint="echo \$VAR1” –env=“VAR1:VALUE1”

Return Type

Config !

Arguments

Name	Type	Default Value	Description
archs	[String ! ]	-	a list of container architectures (defaults to amd64)
cmd	String	-	the command to execute after the container entrypoint
entrypoint	String !	-	the entrypoint to the container
env	[String ! ]	-	a list of environment variables to set within the container image, expected in (key:value) format
pkgs	[String ! ]	-	a list of packages to install within the container

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \
 with-wolfi --entrypoint string

func (m *myModule) example(entrypoint string) *ApkoConfig  {
	return dag.
			Apko().
			WithWolfi(entrypoint)
}

@function
def example(entrypoint: str) -> dag.ApkoConfig:
	return (
		dag.apko()
		.with_wolfi(entrypoint)
	)

@func()
example(entrypoint: string): ApkoConfig {
	return dag
		.apko()
		.withWolfi(entrypoint)
}

withAlpine() 🔗

Generates and loads a pre-configured apko configuration file for building an image based on the Alpine OS. By default, the [alpine-base, ca-certificates-bundle] packages will be installed.

Examples:

Generate a default alpine OS apko configuration file

$ dagger call with-alpine –entrypoint=“/bin/sh -l”

Extend the default alpine OS apko configuration file

$ dagger call with-alpine --entrypoint="echo \$VAR1” –env=“VAR1:VALUE1”

Return Type

Config !

Arguments

Name	Type	Default Value	Description
archs	[String ! ]	-	a list of container architectures (defaults to amd64)
cmd	String	-	the command to execute after the container entrypoint
entrypoint	String !	-	the entrypoint to the container
env	[String ! ]	-	a list of environment variables to set within the container image, expected in (key:value) format
pkgs	[String ! ]	-	a list of packages to install within the container

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \
 with-alpine --entrypoint string

func (m *myModule) example(entrypoint string) *ApkoConfig  {
	return dag.
			Apko().
			WithAlpine(entrypoint)
}

@function
def example(entrypoint: str) -> dag.ApkoConfig:
	return (
		dag.apko()
		.with_alpine(entrypoint)
	)

@func()
example(entrypoint: string): ApkoConfig {
	return dag
		.apko()
		.withAlpine(entrypoint)
}

Config 🔗

Represents an Apko configuration that forms the basis of all apko commands

yaml() 🔗

Prints the generated apko configuration file to stdout

Return Type

String !

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \
 with-alpine --entrypoint string \
 yaml

func (m *myModule) example(ctx context.Context, entrypoint string) string  {
	return dag.
			Apko().
			WithAlpine(entrypoint).
			Yaml(ctx)
}

@function
async def example(entrypoint: str) -> str:
	return await (
		dag.apko()
		.with_alpine(entrypoint)
		.yaml()
	)

@func()
async example(entrypoint: string): Promise<string> {
	return dag
		.apko()
		.withAlpine(entrypoint)
		.yaml()
}

build() 🔗

Builds an image from an apko configuration file and outputs it as a file that can be imported using:

$ docker load < image.tar

Examples:

Build an OCI image from a provided apko configuration file

$ dagger call load –cfg apko.yaml build –ref registry:5000/example:latest

Build an OCI image based on the Wolfi OS

$ dagger call with-wolfi build –ref registry:5000/example:latest

Return Type

Directory !

Arguments

Name	Type	Default Value	Description
annotations	[String ! ]	-	additional OCI annotations to add to the built image, expected in (key:value) format
archs	[String ! ]	-	a list of architectures to build, overwriting the config
pkgs	[String ! ]	-	a list of additional packages to include within the built image
repos	[String ! ]	-	a list of additional repositories used to pull packages into the built image
ref	String !	-	the image reference to build
vcs	Boolean	-	detect and embed VCS URLs within the built OCI image default=true
sbom	Boolean	true	generate and embed an SBOM (software bill of materials) within the built OCI image

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \
 with-alpine --entrypoint string \
 build --ref string

func (m *myModule) example(entrypoint string, ref string) *Directory  {
	return dag.
			Apko().
			WithAlpine(entrypoint).
			Build(ref)
}

@function
def example(entrypoint: str, ref: str) -> dagger.Directory:
	return (
		dag.apko()
		.with_alpine(entrypoint)
		.build(ref)
	)

@func()
example(entrypoint: string, ref: string): Directory {
	return dag
		.apko()
		.withAlpine(entrypoint)
		.build(ref)
}

publish() 🔗

Builds an image from an apko configuration file and publishes it to an OCI image registry

Examples:

Publish an OCI image from a provided apko configuration file

$ dagger call load –cfg apko.yaml publish –ref registry:5000/example:latest

Publish an OCI image based on the Wolfi OS

$ dagger call with-wolfi build –ref registry:5000/example:latest

Return Type

String !

Arguments

Name	Type	Default Value	Description
annotations	[String ! ]	-	additional OCI annotations to add to the built image, expected in (key:value) format
archs	[String ! ]	-	a list of architectures to build, overwriting the config
pkgs	[String ! ]	-	a list of additional packages to include within the built image
repos	[String ! ]	-	a list of additional repositories used to pull packages into the built image
ref	String !	-	the image reference to build
vcs	Boolean	-	detect and embed VCS URLs within the built OCI image default=true
sbom	Boolean	true	generate and embed an SBOM (software bill of materials) within the built OCI image
registry	String	"docker.io"	the address of the registry to authenticate with
username	String	-	the username for authenticating with the registry
password	Secret	-	the password for authenticating with the registry

Example

dagger -m github.com/purpleclay/daggerverse/apko@f91ee15f9f9c244b95557f3b9aec0842906bdd22 call \
 with-alpine --entrypoint string \
 publish --ref string

func (m *myModule) example(ctx context.Context, entrypoint string, ref string) string  {
	return dag.
			Apko().
			WithAlpine(entrypoint).
			Publish(ctxref)
}

@function
async def example(entrypoint: str, ref: str) -> str:
	return await (
		dag.apko()
		.with_alpine(entrypoint)
		.publish(ref)
	)

@func()
async example(entrypoint: string, ref: string): Promise<string> {
	return dag
		.apko()
		.withAlpine(entrypoint)
		.publish(ref)
}