fix(sftd_disco): update base image to fix CVEs

related to WPB-15480

Author: lwille

tools/sftd_disco/Dockerfile

@@ -1,7 +1,7 @@
-FROM alpine:3.15.0
+FROM alpine:3.21.2
 
 RUN apk add --no-cache curl bash openssl bind-tools jq
 
-COPY tools/sftd_disco/sftd_disco.sh /usr/bin/sftd_disco.sh
+COPY sftd_disco.sh /usr/bin/sftd_disco.sh
 
 ENTRYPOINT ["/usr/bin/sftd_disco.sh"]

tools/sftd_disco/Makefile

@@ -1,6 +1,6 @@
 .PHONY: docker
 
-DOCKER_TAG = wip-2
+DOCKER_TAG = 1.0.0
 
 docker:
-	docker build -t quay.io/wire/sftd_disco:$(DOCKER_TAG) -f Dockerfile ../..
+	docker build -t quay.io/wire/sftd_disco:$(DOCKER_TAG) -f Dockerfile .