Update alpine Docker tag to v3.21.0

renovate[bot] · web-flow · commit 537e8f03b29c · 2024-12-06T00:22:55.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.4
+FROM alpine:3.21.0
 
 ARG VERSION
 ARG REVISION
diff --git a/Dockerfile-build b/Dockerfile-build
@@ -12,7 +12,7 @@ RUN make download
 COPY . .
 RUN make clean build VERSION=$VERSION
 
-FROM alpine:3.18.4
+FROM alpine:3.21.0
 
 WORKDIR /usr/local/bin
 
