base: add labels to the resulting image containing the build properties.

Dockerfile

@@ -4,12 +4,17 @@ FROM ghcr.io/cnpem/lnls-debian-epics-7:v0.12.0-dev AS build-image
 
 FROM debian:${DEBIAN_VERSION}-slim AS base
 
+ARG DEBIAN_VERSION
+
 ARG RUNDIR
 ARG ENTRYPOINT=/usr/local/bin/lnls-run
 ARG RUNTIME_PACKAGES
 ARG RUNTIME_TAR_PACKAGES
 ARG RUNTIME_PIP_PACKAGES
 
+LABEL br.lnls.epics-in-docker.version="v0.12.0-dev"
+LABEL br.lnls.debian.version=${DEBIAN_VERSION}
+
 COPY --from=build-image /etc/apt/apt.conf.d/90-disable-sandbox.conf /etc/apt/apt.conf.d/90-disable-sandbox.conf
 
 RUN apt update -y && \
@@ -44,8 +49,9 @@ ENTRYPOINT ["./entrypoint"]
 
 FROM base AS no-build
 
-COPY --from=build-image /opt /opt
+LABEL br.lnls.epics-in-docker.target="no-build"
 
+COPY --from=build-image /opt /opt
 
 FROM build-image AS build-stage
 
@@ -78,8 +84,9 @@ RUN make distclean && make -j ${JOBS} && make $([ "$SKIP_TESTS" != 1 ] && echo r
 
 FROM base AS dynamic-link
 
-COPY --from=dynamic-build /opt /opt
+LABEL br.lnls.epics-in-docker.target="dynamic-link"
 
+COPY --from=dynamic-build /opt /opt
 
 FROM build-stage AS static-build
 
@@ -94,6 +101,8 @@ RUN make distclean && make -j ${JOBS} && make $([ "$SKIP_TESTS" != 1 ] && echo r
 
 FROM base AS static-link
 
+LABEL br.lnls.epics-in-docker.target="static-link"
+
 ARG REPONAME
 
 COPY --from=static-build /opt/${REPONAME} /opt/${REPONAME}