Jenkinsfile Generator
Generate a declarative Jenkinsfile pipeline.
- Runs locally in your browser
- No upload required
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Runs entirely in your browser. Your input is never uploaded, stored, or sent to a third party.
Generated a declarative Jenkinsfile with 4 stage(s).
How it works
- Declared the docker agent using node:20-alpine.
- Emitted stages: checkout, build, test, deploy.
- Guarded every stage with a branch condition for "main".
- Added a post/always block.
- The pipeline is a starting point: review the agent and steps for your Jenkins setup.
- No credential is written into the file; bind Jenkins credentials in the UI.
Methodology
- Emit a `pipeline {}` block with the selected agent declaration.
- Emit each selected stage with an optional branch guard and the matching steps.
- Append the optional post/always block and close the pipeline.
Usage
- Choose the Jenkins agent and, for docker, the image.
- Select the pipeline stages.
- Run the generator and copy the result into a Jenkinsfile.
Examples
These are examples, not current values: they use fixed inputs, while the interactive tool computes live results in your browser.
Docker agent with test and deploy
{
"agent": "docker",
"dockerImage": "node:20-alpine",
"language": "node",
"stages": [
"checkout",
"build",
"test",
"deploy"
],
"branch": "main",
"post": true
}Plain agent with checkout
{
"agent": "any",
"dockerImage": "",
"language": "none",
"stages": [
"checkout"
],
"branch": "",
"post": false
}Limitations
Declarative vs scripted pipelines
The declarative pipeline uses a fixed `pipeline { agent; stages { … } post { … } }` structure. It is more constrained than the scripted Groovy form but is easier to review and less prone to accidental side effects.
The generator emits only declarative syntax and never interpolates an unchecked string into a shell step.
Frequently asked questions
- What is a declarative pipeline?
- Jenkins offers a declarative syntax (`pipeline { … }`) with a fixed structure of agent, stages and post blocks. It is stricter and easier to read than the scripted syntax, and it is what this generator emits.
- Why is there no deployment command?
- Deployment is environment-specific, so the deploy stage contains a clearly labelled placeholder you replace.
Sources
- Jenkins Pipeline syntax (declarative) — Jenkins
- Jenkins Pipeline documentation — Jenkins
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