Update alpine Docker tag to v3.21.0

renovate[bot] · web-flow · commit 478f2a63f7f6 · 2024-12-06T00:26:49.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20.3
+FROM alpine:3.21.0
 
 # set version label
 ARG BUILD_DATE
