dagger/pkg/dagger.io

slug	displayed_sidebar
/1213/api	europa

Dagger CUE API (0.2+)

As of Dagger 0.2 (codename Europa), the Dagger CUE API can be imported at dagger.io/dagger.

The Dagger CUE API is the set of CUE packages released alongside the Dagger engine, to allow developers to access its features.

Plan definition

#Plan defines the structure of a Dagger plan - a complete configuration executable by dagger up.

Core types

Dagger extends the CUE type system with the following core types:

• #FS: a reference to a filesystem tree
• #Secret: a secure reference to an external secret
• #Service a reference to a network service endpoints

Core actions

Dagger works by executing actions in a certain order and passing data between actions in a certain layout.

Developers can combine actions into higher-level actions, which in turn can be combined into even higher-level actions, and so on at arbitrary levels of depth. At the bottom of this abstraction stack are core actions: these are implemented by Dagger itself, and are always available.

The following core actions are available:

Core action	File	Description
#Exec	exec.cue	Execute a command in a docker-compatible container
#HTTPFetch	http.cue	Download an archive from an HTTP server
#Push	image.cue	Upload an image to a docker registry
#Pull	image.cue	Download an image from a docker registry
#Dockerfile	image.cue	Execute a Dockerfile
#Set	image.cue	Modify a docker image
#GitPush	git.cue	Upload a repository to a remote git server
#GitPull	git.cue	Download a repository from a remote git server
#DecodeSecret	secrets.cue	Decode a secret without leaking its contents
#NewSecret	secrets.cue	Dynamically create a new secret
#Source	fs.cue	Access the source for the current CUE package
#Mkdir	fs.cue	Create a directory in a filesystem tree
#ReadFile	fs.cue	Read a file from a tree
#WriteFile	fs.cue	Write a file to a tree
#Scratch	fs.cue	Create an empty tree
#Copy	fs.cue	Copy files between two trees
#Subdir	fs.cue	Read a subdirectory from a filesystem tree