Associate Docker image with repository

Author: TheAssassin

docker/Dockerfile

@@ -2,6 +2,8 @@
 # this is going to take the most time
 FROM alpine:3.17 AS builder
 
+LABEL org.opencontainers.image.source = "https://github.com/blue-nebula/base"
+
 RUN apk add gcc g++ binutils sdl2-dev zlib-dev perl git wget ca-certificates coreutils \
     sdl2_image-dev sdl2_mixer-dev psmisc cmake ninja