build (docker): improve description

docker/Dockerfile

@@ -39,7 +39,7 @@ FROM alpine
 
 LABEL maintainer="Gilles Filippini <gilles.filippini@pini.fr>"
 LABEL version="0.0.0"
-LABEL description="POC for a Substrate based Libre Currency implementation (https://libre-currency.org/)"
+LABEL description="Crypto-currency software (based on Substrate framework) to operate Ğ1 libre currency"
 
 # Dependancies
 RUN apk update && \