Update docker.io/alpine Docker tag to v3.21.0 (#91)

renovate[bot] · web-flow · commit 1aab1ab4930b · 2024-12-06T01:22:01.000Z
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/alpine/Dockerfile b/alpine/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/alpine:3.20.3
+FROM docker.io/alpine:3.21.0
 
 # ENV CURL_VERSION="8.0.1-r0"
 # ENV LIBCRYPTO1_VERSION="1.1.1t-r2"
