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feat(chart): Added helper functions to generate the container image values (#61)

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### Description of the change

<!-- Describe the scope of your change - i.e. what the change does. -->

The change modifies how container images are managed in the Gitea Helm chart for Gitea Actions. Instead of using a simple string concatenation for image names, the patch introduces a more flexible templating approach. It adds three new templates in `_helpers.tpl`:

  * `gitea.actions.actRunner.image`: Constructs the full image name for the Gitea Actions Act Runner.
  * `gitea.actions.dind.image`: Creates the image name for the DinD (Docker-in-Docker) container.
  * `gitea.actions.init.image`: Generates the image name for the Init container.

These templates build the image name dynamically using values from `values.yaml` and the chart's metadata. The logic prioritizes a full image override, a specified registry, or a default repository and tag.

The patch also updates `statefulset.yaml` to use these new templates for the `init-gitea`, `act-runner`, and `dind` containers. Additionally, `values.yaml` is updated to include new, optional parameters for each image, such as `registry`, `digest`, and `fullOverride`, providing more granular control over the image source.

### Tests and Examples

To test this change, you can use `helm template` with different configurations in a `values.yaml` file to observe the resulting Kubernetes manifest.

#### Example 1: Default configuration

With no changes to the new fields in `values.yaml`, the image names should resolve to the defaults:

  * **Act Runner**: `docker.gitea.com/gitea/act_runner:0.2.13`
  * **DinD**: `docker:28.3.3-dind`
  * **Init**: `busybox:1.37.0`

#### Example 2: Using a `fullOverride`

If you set `fullOverride` for the `actRunner` like this via CLI

```shell
 helm template test . \
    --set giteaRootURL=https://localhost/gitea \
    --set existingSecret=test --set existingSecretKey=test \
    --set enabled=true \
    --set statefulset.actRunner.fullOverride="my.private.registry/custom-gitea-runner:latest"
```

The `statefulset.yaml` for the `act-runner` container will have its image field set to `my.private.registry/custom-gitea-runner:latest`.

```
        - name: act-runner
          image: "my.private.registry/custom-gitea-runner:latest"
```

#### Example 3: Using a custom `registry` and `digest`

```shell
 helm template test . \
    --set giteaRootURL=https://localhost/gitea \
    --set existingSecret=test --set existingSecretKey=test \
    --set enabled=true \
    --set statefulset.dind.registry="quay.io" \
    --set statefulset.dind.digest="sha256:abcdef123456"
```

The `statefulset.yaml` for the `dind` container will have its image field set to `quay.io/docker:28.3.3-dind@sha256:abcdef123456`.

```
      - name: dind
        image: "quay.io/docker:28.3.3-dind@sha256:abcdef123456"

```

#### Example 4: Using the `global.imageRegistry`

If you set global.imageRegistry
```shell
 helm template test . \
    --set giteaRootURL=https://localhost/gitea \
    --set existingSecret=test --set existingSecretKey=test \
    --set enabled=true \
    --set global.imageRegistry=quay.io
```

The `statefulset.yaml` for each container will have the following values

  * **Act Runner**: `quay.io/gitea/act_runner:0.2.13`
  * **DinD**: `quay.io/docker:28.3.3-dind`
  * **Init**: `quay.io/busybox:1.37.0`

### Benefits

<!-- What benefits will be realized by the code change? -->

There are no known limitations with this change. The new templating approach makes the chart more adaptable and configurable, offering more control than the previous method.

### Possible drawbacks

<!-- Describe any known limitations with your change -->

Increased configuration complexity

### Applicable issues

<!-- Enter any applicable Issues here (You can reference an issue using #). Please remove this section if there is no referenced issue. -->
- Fixes #58

### Additional information

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### ⚠ BREAKING

<!-- If there's a breaking change, please shortly describe in which way users are affected and how they can mitigate it. If there are no breakings, please remove this section. -->

### Checklist

<!-- [Place an '[X]' (no spaces) in all applicable fields. Please remove unrelated fields.] -->

- [X] Parameters are documented in the `values.yaml` and added to the `README.md` using [readme-generator-for-helm](https://github.com/bitnami-labs/readme-generator-for-helm)
- [X] Helm templating unittests are added (required when changing anything in `templates` folder)
- [X] All added template resources MUST render a namespace in metadata

Co-authored-by: Christopher Homberger <christopher.homberger@web.de>
Reviewed-on: https://gitea.com/gitea/helm-actions/pulls/61
Reviewed-by: Ross Golder <rossigee@noreply.gitea.com>
Reviewed-by: DaanSelen <daanselen@noreply.gitea.com>
Reviewed-by: Markus Pesch <volker.raschek@noreply.gitea.com>
Reviewed-by: ChristopherHX <christopherhx@noreply.gitea.com>
Co-authored-by: Stephen Sullivan <sjsullivan7@gmail.com>
Co-committed-by: Stephen Sullivan <sjsullivan7@gmail.com>
This commit is contained in:
Stephen Sullivan
2025-09-21 15:24:49 +00:00
committed by DaanSelen
parent fb7635950c
commit 3b5bdc30f5
5 changed files with 210 additions and 3 deletions
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17
README.md
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@@ -57,13 +57,19 @@ You should be good to go!
| `statefulset.tolerations` | Tolerations for the statefulset | `[]` |
| `statefulset.affinity` | Affinity for the statefulset | `{}` |
| `statefulset.extraVolumes` | Extra volumes for the statefulset | `[]` |
| `statefulset.actRunner.registry` | image registry, e.g. gcr.io,docker.io | `docker.gitea.com` |
| `statefulset.actRunner.repository` | The Gitea act runner image | `gitea/act_runner` |
| `statefulset.actRunner.tag` | The Gitea act runner tag | `0.2.13` |
| `statefulset.actRunner.digest` | Image digest. Allows to pin the given image tag. Useful for having control over mutable tags like `latest` | `""` |
| `statefulset.actRunner.pullPolicy` | The Gitea act runner pullPolicy | `IfNotPresent` |
| `statefulset.actRunner.fullOverride` | Completely overrides the image registry, path/image, tag and digest. | `""` |
| `statefulset.actRunner.extraVolumeMounts` | Allows mounting extra volumes in the act runner container | `[]` |
| `statefulset.actRunner.config` | Act runner custom configuration. See [Act Runner documentation](https://docs.gitea.com/usage/actions/act-runner#configuration) for details. | `Too complex. See values.yaml` |
| `statefulset.dind.registry` | image registry, e.g. gcr.io,docker.io | `""` |
| `statefulset.dind.repository` | The Docker-in-Docker image | `docker` |
| `statefulset.dind.tag` | The Docker-in-Docker image tag | `28.3.3-dind` |
| `statefulset.dind.digest` | Image digest. Allows to pin the given image tag. Useful for having control over mutable tags like `latest` | `""` |
| `statefulset.dind.fullOverride` | Completely overrides the image registry, path/image, tag and digest. | `""` |
| `statefulset.dind.pullPolicy` | The Docker-in-Docker pullPolicy | `IfNotPresent` |
| `statefulset.dind.extraVolumeMounts` | Allows mounting extra volumes in the Docker-in-Docker container | `[]` |
| `statefulset.dind.extraEnvs` | Allows adding custom environment variables, such as `DOCKER_IPTABLES_LEGACY` | `[]` |
@@ -72,6 +78,17 @@ You should be good to go!
| `existingSecretKey` | Secret key | `""` |
| `giteaRootURL` | URL the act_runner registers and connect with | `""` |
### Gitea Actions Init
| Name | Description | Value |
| ------------------------- | ---------------------------------------------------------------------------------------------------------- | -------------- |
| `init.image.registry` | image registry, e.g. gcr.io,docker.io | `""` |
| `init.image.repository` | The init image | `busybox` |
| `init.image.tag` | the init image tag | `1.37.0` |
| `init.image.digest` | Image digest. Allows to pin the given image tag. Useful for having control over mutable tags like `latest` | `""` |
| `init.image.pullPolicy` | The init image pullPolicy | `IfNotPresent` |
| `init.image.fullOverride` | Completely overrides the image registry, path/image, tag and digest. | `""` |
### Global
| Name | Description | Value |