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https://github.com/concourse/concourse

Concourse is a container-based continuous thing-doer written in Go.
https://github.com/concourse/concourse

ci ci-cd concourse continuous-delivery continuous-integration elm go hacktoberfest pipelines

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Concourse is a container-based continuous thing-doer written in Go.

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# Concourse: the continuous thing-doer.



[![Discord](https://img.shields.io/discord/219899946617274369.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)][discord]

[![Build](https://ci.concourse-ci.org/api/v1/teams/main/pipelines/concourse/badge)](https://ci.concourse-ci.org/teams/main/pipelines/concourse)

[![Contributors](https://img.shields.io/github/contributors/concourse/concourse)](https://github.com/concourse/concourse/graphs/contributors)

[![Help Wanted](https://img.shields.io/github/labels/concourse/concourse/help%20wanted)](https://github.com/concourse/concourse/labels/help%20wanted)



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](screenshots/booklit-pipeline.png)



Concourse is very opinionated about a few things: idempotency, immutability,

declarative config, stateless workers, and reproducible builds.



## The road to Concourse v10



[Concourse v10][v10] is the code name for a set of features which, when used

in combination, will have a massive impact on Concourse's capabilities as a

generic continuous thing-doer. These features, and how they interact, are

described in detail in the [Core roadmap: towards v10][v10] and [Re-inventing

resource types][prototypes] blog posts. (These posts are *slightly* out of

date, but they get the idea across.)



Notably, **v10 will make Concourse not suck for multi-branch and/or

pull-request driven workflows** - examples of *spatial* change, where the set

of things to automate grows and shrinks over time.



Because v10 is really an alias for a ton of separate features, there's a lot

to keep track of - here's an overview:



| Feature                  | RFC              | Status |

| ------------------------ | ---------------- | ------ |

| `set_pipeline` step      | ✔ [#31][rfc-31]  | ✔ v5.8.0 (experimental) |

| Var sources for creds    | ✔ [#39][rfc-39]  | ✔ v5.8.0 (experimental), TODO: [#5813][issue-5813] |

| Archiving pipelines      | ✔ [#33][rfc-33]  | ✔ v6.5.0 |

| Instanced pipelines      | ✔ [#34][rfc-34]  | ✔ v7.0.0 (experimental) |

| Static `across` step     | 🚧 [#29][rfc-29] | ✔ v6.5.0 (experimental) |

| Dynamic `across` step    | 🚧 [#29][rfc-29] | ✔ v7.4.0 (experimental, not released yet) |

| Projects                 | 🚧 [#32][rfc-32] | 🙏 RFC needs feedback! |

| `load_var` step          | ✔ [#27][rfc-27]  | ✔ v6.0.0 (experimental) |

| `get_var` step           | ✔ [#27][rfc-27]  | 🚧 [#5815][issue-5815] in progress! |

| [Prototypes][prototypes] | ✔ [#37][rfc-37]  | ⚠ Pending first use of protocol (any of the below) |

| `run` step               | 🚧 [#37][rfc-37]  | ⚠ Pending its own RFC, but feel free to experiment |

| Resource prototypes      | ✔ [#38][rfc-38]  | 🙏 [#5870][issue-5870] looking for volunteers! |

| Var source prototypes    |                  | 🚧 [#6275][issue-6275] planned, may lead to RFC |

| Notifier prototypes      | 🚧 [#28][rfc-28] | ⚠ RFC not ready |



The Concourse team at VMware will be working on these features, however in the

interest of growing a healthy community of contributors we would really

appreciate any volunteers. This roadmap is very easy to parallelize, as it is

comprised of many orthogonal features, so the faster we can power through it,

the faster we can all benefit. We want these for our own pipelines too! 😆



If you'd like to get involved, hop in [Discord][discord] or leave a comment on

any of the issues linked above so we can coordinate. We're more than happy to

help figure things out or pick up any work that you don't feel comfortable

doing (e.g. UI, unfamiliar parts, etc.).



Thanks to everyone who has contributed so far, whether in code or in the

community, and thanks to everyone for their patience while we figure out how to

support such common functionality the "Concoursey way!" 🙏



[issue-5813]: https://github.com/concourse/concourse/issues/5813

[issue-5814]: https://github.com/concourse/concourse/issues/5814

[issue-5815]: https://github.com/concourse/concourse/issues/5815

[issue-5870]: https://github.com/concourse/concourse/issues/5870

[issue-5921]: https://github.com/concourse/concourse/issues/5921

[issue-6275]: https://github.com/concourse/concourse/issues/6275

[pr-5896]: https://github.com/concourse/concourse/pull/5896

[rfc-27]: https://github.com/concourse/rfcs/blob/master/027-var-steps/proposal.md

[rfc-28]: https://github.com/concourse/rfcs/pull/28

[rfc-29]: https://github.com/concourse/rfcs/pull/29

[rfc-31]: https://github.com/concourse/rfcs/blob/master/031-set-pipeline-step/proposal.md

[rfc-32]: https://github.com/concourse/rfcs/pull/32

[rfc-33]: https://github.com/concourse/rfcs/blob/master/033-archiving-pipelines/proposal.md

[rfc-34]: https://github.com/concourse/rfcs/blob/master/034-instanced-pipelines/proposal.md

[rfc-37]: https://github.com/concourse/rfcs/blob/master/037-prototypes/proposal.md

[rfc-38]: https://github.com/concourse/rfcs/blob/master/038-resource-prototypes/proposal.md

[rfc-39]: https://github.com/concourse/rfcs/blob/master/039-var-sources/proposal.md



[v10]: https://blog.concourse-ci.org/2019/07/17/core-roadmap-towards-v10.html

[prototypes]: https://blog.concourse-ci.org/2019/10/15/reinventing-resource-types.html



## Installation



Concourse is distributed as a single `concourse` binary, available on the [Releases page](https://github.com/concourse/concourse/releases/latest).



If you want to just kick the tires, jump ahead to the [Quick Start](#quick-start).



In addition to the `concourse` binary, there are a few other supported formats.

Consult their GitHub repos for more information:



* [Docker image](https://github.com/concourse/concourse-docker)

* [BOSH release](https://github.com/concourse/concourse-bosh-release)

* [Kubernetes Helm chart](https://github.com/concourse/concourse-chart)



## Quick Start



```sh

$ 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](http://127.0.0.1:8080). You can

log in with the username/password as `test`/`test`.



> :warning: **If you are using an M1 mac**: M1 macs are incompatible with the `containerd` runtime. After downloading the docker-compose file, change `CONCOURSE_WORKER_RUNTIME: "containerd"` to `CONCOURSE_WORKER_RUNTIME: "houdini"`.

**This feature is experimental**



Next, install `fly` by downloading it from the web UI and target your local

Concourse as the `test` user:



```sh

$ 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:



```yaml

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](https://concourse-ci.org/install.html), try saving the above example

as `booklit.yml`, [target your Concourse

instance](https://concourse-ci.org/fly.html#fly-login), and then run:



```sh

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](https://concourse-ci.org) for documentation,

  reference material, and example pipelines (which no longer live in this repository).

* The [Concourse Tutorial](https://concoursetutorial.com) by Stark & Wayne is

  great for a guided introduction to all the core concepts.

* See Concourse in action with our [production pipelines](https://ci.concourse-ci.org/)

* Hang around in the [GitHub discussions](https://github.com/concourse/concourse/discussions) or in

  [Discord](https://discord.gg/MeRxXKW).

* See what we're working on the [project board](https://github.com/orgs/concourse/projects). 



## Contributing



Our user base is basically everyone that develops software (and wants it to

work).



It's a lot of work, and we need your help! If you're interested, check out our

[contributing docs](CONTRIBUTING.md).



[discord]: https://discord.gg/MeRxXKW