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feat:add multi platform support to publish chart #112

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71480d2
feat: add support for multi-platform to publish-chart
sgaist Jun 4, 2025
2a1b7b7
feat(doc): add steps example to chartpress related actions for multi-…
sgaist Jun 4, 2025
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25 changes: 25 additions & 0 deletions publish-chart/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,26 @@ It can simply be used as a step in a GitHub actions job:
GITHUB_TOKEN: ${{ secrets.CI_TOKEN }}
```

When doing a multi-platform build:

```yaml
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 0
- name: Set up QEMU
uses: docker/setup-qemu-action@v3
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
- uses: SwissDataScienceCenter/renku/actions/publish-chart@master
env:
CHART_DIR: helm-chart/mychart # path to the chart directory
DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
DOCKER_PASSWORD: ${{ secrest.DOCKER_PASSWORD }}
GITHUB_TOKEN: ${{ secrets.CI_TOKEN }}
PLATFORMS: "linux/amd64,linux/arm64"
```

Note that the `CI_TOKEN` needs write permissions to wherever the chart is
published to.

Expand All @@ -36,3 +56,8 @@ You can set these environment variables:
| GITHUB_TOKEN | None | Yes |
| IMAGE_PREFIX | None | No |
| CHARTPRESS_SPEC_DIR | . | No |
| PLATFORMS | linux/amd64 | No |

Platforms can be specified as a comma-separated list of values. For example, to
build images for amd64 and arm64 platforms, set `PLATFORMS` to
`linux/amd64,linux/arm64`.
15 changes: 14 additions & 1 deletion publish-chart/publish-chart.sh
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Expand Up @@ -37,6 +37,19 @@ if [ -z "$CHARTPRESS_SPEC_DIR" ]; then
CHARTPRESS_SPEC_DIR="."
fi

PLATFORM_ARGS=""
BUILDER_ARG=""
if [ ! -z "$PLATFORMS" ]; then
# setting up docker-buildx for multi-platform builds
docker buildx create --name multiarch --use
docker buildx inspect --bootstrap

for platform in $(echo $PLATFORMS | tr ',' ' '); do
PLATFORM_ARGS="$PLATFORM_ARGS --platform $platform"
done
BUILDER_ARG="--builder docker-buildx"
fi

# set up git
git config --global user.email "$GIT_EMAIL"
git config --global user.name "$GIT_USER"
Expand All @@ -49,4 +62,4 @@ echo ${DOCKER_PASSWORD} | docker login -u ${DOCKER_USERNAME} --password-stdin

# build and push the chart and images
cd $CHARTPRESS_SPEC_DIR
chartpress --push --publish-chart $CHART_TAG $IMAGE_PREFIX
chartpress --push --publish-chart $CHART_TAG $IMAGE_PREFIX $PLATFORM_ARGS $BUILDER_ARG
28 changes: 24 additions & 4 deletions publish-chartpress-images/README.md
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Expand Up @@ -18,6 +18,25 @@ It can simply be used as a step in a GitHub actions job:
DOCKER_PASSWORD: ${{ secrest.DOCKER_PASSWORD }}
```

When doing a multi-platform build:

```yaml
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 0
- name: Set up QEMU
uses: docker/setup-qemu-action@v3
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
- uses: SwissDataScienceCenter/renku/actions/publish-chartpress-images@master
env:
CHART_DIR: helm-chart/mychart # path to the chart directory
DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
DOCKER_PASSWORD: ${{ secrest.DOCKER_PASSWORD }}
PLATFORMS: "linux/amd64,linux/arm64"
```

## Configuration

You can set these environment variables:
Expand All @@ -32,8 +51,9 @@ You can set these environment variables:
| PUSH_LATEST | None | No |
| PLATFORMS | linux/amd64 | No |

Note: setting the `PUSH_LATEST` variable to any non-zero value will trigger the publishing of
the images with the `latest` tag.

Platforms can be specified as a comma-separated list of values. For example, to build images for amd64 and arm64 platforms, set `PLATFORMS` to `linux/amd64,linux/arm64`.
Note: setting the `PUSH_LATEST` variable to any non-zero value will trigger the
publishing of the images with the `latest` tag.

Platforms can be specified as a comma-separated list of values. For example, to
build images for amd64 and arm64 platforms, set `PLATFORMS` to
`linux/amd64,linux/arm64`.