# README

Concourse: the continuous thing-doer.

Concourse is an automation system written in Go. It is most commonly used for CI/CD, and is built to scale to any kind of automation pipeline, from simple to complex.

booklit pipeline

Concourse is very opinionated about a few things: idempotency, immutability, declarative config, stateless workers, and reproducible builds.

Installation

Concourse is distributed as a single concourse binary, available on the Releases page.

If you want to just kick the tires, jump ahead to the Quick Start.

In addition to the concourse binary, there are a few other supported formats. Consult their GitHub repos for more information:

Quick Start

$ wget https://concourse-ci.org/docker-compose.yml
$ docker-compose up
Creating docs_concourse-db_1 ... done
Creating docs_concourse_1    ... done

Concourse will be running at 127.0.0.1:8080. You can log in with the username/password as test/test.

Next, install fly by downloading it from the web UI and target your local Concourse as the test user:

$ fly -t ci login -c http://127.0.0.1:8080 -u test -p test
logging in to team 'main'

target saved

Configuring a Pipeline

There is no GUI for configuring Concourse. Instead, pipelines are configured as declarative YAML files:

resources:
- name: booklit
  type: git
  source: {uri: "https://github.com/vito/booklit"}

jobs:
- name: unit
  plan:
  - get: booklit
    trigger: true
  - task: test
    file: booklit/ci/test.yml

Most operations are done via the accompanying fly CLI. If you've got Concourse installed, try saving the above example as booklit.yml, target your Concourse instance, and then run:

fly -t ci set-pipeline -p booklit -c booklit.yml

These pipeline files are self-contained, maximizing portability from one Concourse instance to the next.

Learn More

The Official Site for documentation, reference material, and example pipelines (which no longer live in this repository).
The Concourse Tutorial by Stark & Wayne is great for a guided introduction to all the core concepts.
See Concourse in action with our production pipelines
Hang around in the forums or in Discord.
See what we're working on on the project board.