chore: renovate: remove config related to alpine packages

.github/renovate.json5

@@ -41,7 +41,16 @@
     {
       "matchPackageNames": "**/renovate",
       "extends": ["schedule:weekly"]
-    }
+    },
+    {
+      // The default "docker" versioning will try to restrict upgrades to versions that do not change everything after
+      // a dash (-) for the current tag, as this typically indicates the "flavor" (e.g. postgresql:17.1-alpine will not
+      // be upgraded to postgresql:17.2-debian).
+      // This image in particular has lots of dashes and does not follow this convention, so we force "loose"
+      // versioning which is pretty much an alphabetical sort.
+      "matchPackageNames": ["ghcr.io/grafana/chromium-swiftshader-alpine"],
+      "versioning": "loose",
+    },
   ],
 
   "customManagers": [
@@ -70,22 +79,6 @@
         "(?:^|\\n)[ \\t]*K6_VERSION\\s*:=\\s*(?<currentValue>\\S+)[ \\t]*(?:$|\\n)"
       ]
     },
-    {
-      // Update pinned alpine packages in Dockerfile.
-      "customType": "regex",
-      "fileMatch": [ "Dockerfile", "Dockerfile.build" ],
-      "matchStrings": [
-        // Lines that loosely look like "apk add --repository community --arch value something=version".
-        // To keep this regex simple, only one package per "apk add" is supported.
-        "\\bapk\\b.+?\\badd\\b.+?(--repository|-X)[ =\\t]+(?<alpineRepo>[a-z]+)\\s+(--arch[ =\\t]+(?<arch>\\w+)\\s+)?(?<depName>[-\\w]+?)=(?<currentValue>[-.\\w]+)"
-      ],
-      "versioningTemplate": "loose", // The most lenient versioning renovate supports.
-      // We use different datasources for main and community, as alpine serves them in different URLs.
-      // Specifying --arch is optional, if not found it will default to x86_64.
-      "datasourceTemplate": "custom.alpine-{{alpineRepo}}-{{#if arch}}{{arch}}{{else}}x86_64{{/if}}",
-      // Extracted "versions" include the package name, so here we strip that prefix using a regex.
-      "extractVersionTemplate": "{{depName}}-(?<version>.+).apk",
-    },
     {
       // Update renovate version in GHA workflow file.
       "customType": "regex",
@@ -99,25 +92,5 @@
         "RENOVATE_IMAGE=ghcr.io/renovatebot/renovate:(?<currentValue>[^@\\s]+)(?:@(?<currentDigest>\\S+))?"
       ]
     }
-  ],
-  "customDatasources": {
-    // Use alpine HTML mirror page as a repository. When using `html` format, renovate produces version strings from
-    // all links present in the page. The version is extracted from that using extractVersionTemplate above.
-    "alpine-main-x86_64": {
-      "defaultRegistryUrlTemplate": "https://dl-cdn.alpinelinux.org/alpine/latest-stable/main/x86_64/",
-      "format": "html",
-    },
-    "alpine-community-x86_64": {
-      "defaultRegistryUrlTemplate": "https://dl-cdn.alpinelinux.org/alpine/latest-stable/community/x86_64/",
-      "format": "html",
-    },
-    "alpine-main-aarch64": {
-      "defaultRegistryUrlTemplate": "https://dl-cdn.alpinelinux.org/alpine/latest-stable/main/aarch64/",
-      "format": "html",
-    },
-    "alpine-community-aarch64": {
-      "defaultRegistryUrlTemplate": "https://dl-cdn.alpinelinux.org/alpine/latest-stable/community/aarch64/",
-      "format": "html",
-    },
-  },
+  ]
 }