renovate.json

{
    "$schema": "https://docs.renovatebot.com/renovate-schema.json",
    "customManagers": [
        {
            "customType": "regex",
            "datasourceTemplate": "docker",
            "fileMatch": ["(^|/)Chart\\.yaml$"],
            "matchStrings": [
                "#\\s*renovate: image=(?<depName>.*?)\\s+appVersion:\\s*[\"']?(?<currentValue>[\\w+\\.\\-]*)"
            ]
        }
    ],
    "packageRules": [
        {
            "description": "patch/minor updates: automerges. Bump helm chart versions by a patch when updating values files. Digests, pins, rollbacks, replacements and pinDigest updates are deliberately ignored since in our use case, these need a manual decision about the version bump for the chart. This can be removed when https://github.com/renovatebot/renovate/issues/8231 is implemented and enabled.",
            "matchManagers": ["helm-values", "regex"],
            "postUpgradeTasks": {
                "commands": [
                    "scripts/bump-chart-version.sh '{{{parentDir}}}' '{{{updateType}}}'"
                ],
                "fileFilters": ["**/Chart.yaml"],
                "executionMode": "branch"
            },
            "matchUpdateTypes": ["patch", "minor"],
            "automerge": true
        },
        {
            "description": "major updates: (no automerge) Bump helm chart versions by a patch when updating values files. Digests, pins, rollbacks, replacements and pinDigest updates are deliberately ignored since in our use case, these need a manual decision about the version bump for the chart. This can be removed when https://github.com/renovatebot/renovate/issues/8231 is implemented and enabled.",
            "matchManagers": ["helm-values", "regex"],
            "postUpgradeTasks": {
                "commands": [
                    "scripts/bump-chart-version.sh '{{{parentDir}}}' '{{{updateType}}}'"
                ],
                "fileFilters": ["**/Chart.yaml"],
                "executionMode": "branch"
            },
            "matchUpdateTypes": ["major"]
        },
        {
            "matchManagers": ["github-actions"],
            "matchUpdateTypes": ["patch", "minor"],
            "automerge": true,
            "ignoreTests": true
        } 
    ]
}