"Updated Alpine image version to 3.20"

docker/Dockerfile.linux.arm64

@@ -1,7 +1,7 @@
 FROM alpine:3.20 as alpine
 RUN apk add -U --no-cache ca-certificates
 
-FROM alpine:3.21
+FROM alpine:3.20
 ENV GODEBUG netdns=go
 COPY --from=alpine /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/