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dagger/docs/use-cases/1211-go-docker-swarm.md

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Add the must-have pages for the Europa release The goal is to capture the shape of the new docs. It is not meant to be final, but it should be as close as possible. We only want the bare minimum for new users that on-board with Dagger Europa. As soon as the new europaSidebar replaces replaces the existing one, the previous docs will still remain available - doc IDs are unique and permanent. We will do this by simply changing the default `slug: /` to point to the Europa Docs entrypoint, which is doc 1200. Helpful Docusaurus link re multiple sidebars: https://docusaurus.io/docs/sidebar/multiple-sidebars The new pages are numbered from `1200` onwards. This is meant to reflect the `0.2.0` Dagger version. This numbering felt more meaningful than just continuing to increment existing numbers. I didn't want to be "wasteful" with the digits and start at `2000`, but that was my first instinct. I am keen on getting this live on https://docs.dagger.io/1200/local-ci. Anything that is not in production, is inventory. Inventory is bad. The goal is to allow anyone that has a link to get a feel for the new docs as soon as possible, so that we can all see how they improve in real-time, and steer them continuously towards the desired state. We should be aware of the timeline, and not muck about, but instead evaluate constantly how close are we to "flipping the switch". Remember, the best releases are those where switches are flipped (e.g. `--europa)`. The feature will have been out there for weeks (maybe even months), improved by talking to users and then one day realising that we are done, and just enabling it by default. It's the same principle behind these docs. Signed-off-by: Gerhard Lazu <gerhard@lazu.co.uk>
2022-02-07 23:16:01 +01:00
---
slug: /1211/go-docker-swarm
displayed_sidebar: europa
Add the must-have pages for the Europa release The goal is to capture the shape of the new docs. It is not meant to be final, but it should be as close as possible. We only want the bare minimum for new users that on-board with Dagger Europa. As soon as the new europaSidebar replaces replaces the existing one, the previous docs will still remain available - doc IDs are unique and permanent. We will do this by simply changing the default `slug: /` to point to the Europa Docs entrypoint, which is doc 1200. Helpful Docusaurus link re multiple sidebars: https://docusaurus.io/docs/sidebar/multiple-sidebars The new pages are numbered from `1200` onwards. This is meant to reflect the `0.2.0` Dagger version. This numbering felt more meaningful than just continuing to increment existing numbers. I didn't want to be "wasteful" with the digits and start at `2000`, but that was my first instinct. I am keen on getting this live on https://docs.dagger.io/1200/local-ci. Anything that is not in production, is inventory. Inventory is bad. The goal is to allow anyone that has a link to get a feel for the new docs as soon as possible, so that we can all see how they improve in real-time, and steer them continuously towards the desired state. We should be aware of the timeline, and not muck about, but instead evaluate constantly how close are we to "flipping the switch". Remember, the best releases are those where switches are flipped (e.g. `--europa)`. The feature will have been out there for weeks (maybe even months), improved by talking to users and then one day realising that we are done, and just enabling it by default. It's the same principle behind these docs. Signed-off-by: Gerhard Lazu <gerhard@lazu.co.uk>
2022-02-07 23:16:01 +01:00
---
# Go on Docker Swarm
![particubes.com](/img/use-cases/particubes.com.png)
[Particubes](https://particubes.com) is a platform dedicated to voxel games, which are games made out of little cubes, like Minecraft.
The team consists of 10 developers that like to keep things simple.
They write primarily Go & Lua, push to GitHub and use GitHub Actions for automation.
The production setup is a multi-node Docker Swarm cluster running on AWS.
The Particubes team chose Dagger for continuous deployment because it was the easiest way of integrating GitHub with Docker Swarm.
Every commit to the main branch goes straight to [docs.particubes.com](https://docs.particubes.com) via a Dagger pipeline that runs in GitHub Actions.
`universe.dagger.io/docker` made building this pipeline trivial:
:::danger
TODO: this config is meta Europa, meaning that it was not tested. Next steps:
- implement it in GitHub Actions and ensure that it all works as expected
- update this meta config to the final version that we know works
:::
```cue
package particubes
import (
"dagger.io/dagger"
"universe.dagger.io/docker"
)
dagger.#Plan & {
inputs: {
directories: src: path: "./lua-docs"
secrets: docs: command: {
name: "sops"
args: ["-d", "../../lua-docs/sops_secrets.yaml"]
}
params: {
image: ref: docker.#Ref | *"registry.particubes.com/lua-docs:latest"
}
}
actions: {
docs: {
// TODO: write GITHUB_SHA into a static /github_sha.txt
build: docker.#Dockerfile & {
source: inputs.directories.src.contents
}
test: {
// TODO:
// - run container
// - check http response code
// - verify /github_sha.txt value matches GITHUB_SHA
// - stop container
}
push: docker.#Push {
dest: inputs.params.image.ref
image: build.output
}
docsSecrets: dagger.#DecodeSecret & {
input: inputs.secrets.docs.contents
format: "yaml"
}
deploy: {
// TODO:
// - run this command in the remote Docker Swarm
// - secrests are ready in docsSecrets, e.g. docsSecrets.output.swarmKey.contents
}
verifyDeploy: {
// TODO:
// - check http response code
// - verify /github_sha.txt value matches GITHUB_SHA
}
}
}
}
```
This is the GitHub Actions workflow config that invokes `dagger`, which in turn runs the above pipeline:
```yaml
name: Dagger/docs.particubes.com
on:
push:
branches: [ master ]
jobs:
deploy:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v2
with:
lfs: true
// TODO: install sops
- name: Dagger
uses: dagger/dagger-action@v1
with:
age-key: ${{ secrets.DAGGER_AGE_KEY }}
args: up
```
Since this is a Dagger pipeline, anyone on the team can run it locally with a single command:
```console
dagger up
```
This is the first step that enabled the Particubes team to have the same CI/CD experience everywhere.
We don't know what comes next for particubes.com, but we would like find out. Some ideas:
- deploy particubes.com with Dagger
- manage the Docker Swarm cluster with Dagger
- contribute `universe.dagger.io/particubes` package
:::tip
The latest version of this pipeline can be found at [github.com/voxowl/particubes/lua-docs/docs.cue](https://github.com/voxowl/particubes/blob/b698777465c02462296de37087dd3c341c29df92/lua-docs/docs.cue)
:::