add label

Author: frepke

Dockerfile

@@ -1,5 +1,5 @@
 FROM php:apache
-LABEL org.opencontainers.image.source https://github.com/${{ github.repository }}
+LABEL org.opencontainers.image.source https://github.com/frepke/php-site
 
 RUN apt-get update && apt-get install -y \
     python