Dagger

Features:

Use CUE (a config language), not Yaml
CUE is all about actions
Dagger helps create custom actions in any language
Dagger provides a huge collection of reusable actions
Run "dagger do deploy" to test & debug on your local machine
Run Dagger pipelines on any Docker compatible runtimes

Run sample TODO app

Clone & run the following

git clone https://github.com/dagger/dagger
cd dagger
git checkout v0.2.4
cd pkg/universe.dagger.io/examples/todoapp
dagger do build

You should see the output similar to below

[✔] actions.deps                   62.1s
[✔] actions.build.run.script   0.4s
[✔] actions.test.script        0.5s
[✔] client.filesystem."./".read                  0.6s
[✔] actions.test                 2.0s
[✔] actions.build.run           12.4s
[✔] actions.build.contents    0.1s
[✔] client.filesystem."./_build".write      0.2s

Run the following command to see your application up & running
```
start _build/index.html
```
Update the application and see changes
- In the todoapp directory, edit line 25 of src/components/Form.js by updating to "What must be done today?" & save the file
- Now run "dagger do build" again & then start _build/index.html to see latest changes

Tags: tool ci-cd devops

Last modified 17 February 2026

Dagger

A portable devkit for CI/CD pipelines.

Dagger helps create custom actions in any language

Dagger provides a huge collection of reusable actions