fix: migrate DC_VERSION to Dockerfile

Dockerfile

@@ -1,10 +1,9 @@
 FROM docker.io/library/ubuntu:24.04 AS download
 
-ARG DC_VERSION
+# renovate: datasource=github-releases depName=docker/compose
+ARG DC_VERSION=v5.0.0
 
 RUN NAME=docker-compose-$(uname | tr [:upper:] [:lower:])-$(uname -m); \
-    echo "${NAME}" && \
-    echo $(uname) && \
     apt update --yes && \
     apt install --yes curl && \
     curl \