renovate.json

{
    "$schema": "https://docs.renovatebot.com/renovate-schema.json",
    "automerge": true,
    "automergeType": "pr",
    "dependencyDashboard": true,
    "extends": ["config:recommended"],
    "pre-commit": {
        "enabled": true
    },
    "rebaseWhen": "behind-base-branch",
    "customManagers": [
        {
            "customType": "regex",
            "fileMatch": ["^Dockerfile$"],
            "matchStrings": [
                "# renovate: datasource=repology depName=alpine_(?<currentValue>\\d+[._]\\d+)"
            ],
            "currentValueTemplate": "{{{ replace '_' '.' currentValue }}}",
            "datasourceTemplate": "docker",
            "depNameTemplate": "docker.io/library/alpine",
            "versioningTemplate": "regex:^(?<major>\\d+)[._](?<minor>\\d+)$",
            "autoReplaceStringTemplate": "# renovate: datasource=repology depName=alpine_{{{newMajor}}}_{{{newMinor}}}"
        },
        {
            "customType": "regex",
            "fileMatch": ["^Dockerfile$"],
            "matchStrings": [
                "#\\s*renovate:\\s*datasource=(?<datasource>.*?) depName=(?<depName>.*?)( versioning=(?<versioning>.*?))?\\sENV .*?_VERSION=\"(?<currentValue>.*)\"\\s"
            ],
            "versioningTemplate": "{{#if versioning}}{{{versioning}}}{{else}}semver{{/if}}"
        }
    ],
    "semanticCommits": "enabled",
    "vulnerabilityAlerts": {
        "enabled": true
    },
    "packageRules": [
        {
            "matchCategories": ["docker"],
            "enabled": true
        }
    ]
}