Update Dockerfile label to opencontainers format

centos7.docker

@@ -23,11 +23,14 @@ RUN yum -y -q install https://yum.kaos.st/kaos-repo-latest.el7.noarch.rpm && \
 
 FROM essentialkaos/centos:7
 
-LABEL name="Bibop Image on CentOS 7" \
-      vendor="ESSENTIAL KAOS" \
-      maintainer="Anton Novojilov" \
-      license="Apache-2.0" \
-      version="2021.12.06"
+LABEL org.opencontainers.image.title="bibop" \
+      org.opencontainers.image.description="Utility for testing command-line tools, daemons, and packages" \
+      org.opencontainers.image.vendor="ESSENTIAL KAOS" \
+      org.opencontainers.image.authors="Anton Novojilov" \
+      org.opencontainers.image.licenses="Apache-2.0" \
+      org.opencontainers.image.url="https://kaos.sh/bibop" \
+      org.opencontainers.image.source="https://github.com/essentialkaos/bibop"
+
 
 COPY --from=builder /go/src/github.com/essentialkaos/bibop/bibop /usr/bin/
 COPY --from=builder /go/src/github.com/essentialkaos/bibop/scripts/bibop-entrypoint /usr/bin/