docker/renovate: manage alpine image by version instead of latest

we don't need to follow latest anymore now that we have renovate managing dependencies. When alpine releases a new tag we should get automatic PR's
autotag-dev · Dec 11, 2024 · 327c2ef · 327c2ef
1 parent 89c636b
commit 327c2ef
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diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:latest
+FROM alpine:3.21.0
 
 RUN apk add --no-cache git
 

diff --git a/renovate.json5 b/renovate.json5
@@ -42,6 +42,13 @@
       "schedule": [
         "after 10pm on the first day of the month"
       ]
+    },
+    {
+      "description": "Don't pin alpine image SHAs, updates too frequently",
+      "matchPackageNames": [
+        "alpine"
+      ],
+      "pinDigests": false
     }
   ],
   "labels": [