Add meta-data

Author: solidnerd

Dockerfile

@@ -27,3 +27,14 @@ COPY docker-entrypoint.sh /
 EXPOSE 80
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
+
+ARG BUILD_DATE
+ARG VCS_REF
+LABEL org.label-schema.build-date=$BUILD_DATE \
+      org.label-schema.docker.dockerfile="/Dockerfile" \
+      org.label-schema.license="MIT" \
+      org.label-schema.name="bookstack" \
+      org.label-schema.url="https://github.com/solidnerd/docker-bookstack/" \
+      org.label-schema.vcs-ref=$VCS_REF \
+      org.label-schema.vcs-url="https://github.com/solidnerd/docker-bookstack.git" \
+      org.label-schema.vcs-type="Git"