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

Dockerfile

@@ -4,6 +4,10 @@ FROM ghcr.io/cnpem/lnls-debian-epics-7:v0.12.0-dev AS build-image
 
 FROM debian:${DEBIAN_VERSION}-slim AS base
 
+LABEL br.lnls.epics-in-docker.version="v0.12.0-dev"
+ARG DEBIAN_VERSION
+LABEL br.lnls.debian.version=${DEBIAN_VERSION}
+
 ARG RUNDIR
 ARG ENTRYPOINT=/usr/local/bin/lnls-run
 ARG RUNTIME_PACKAGES
@@ -46,6 +50,7 @@ FROM base AS no-build
 
 COPY --from=build-image /opt /opt
 
+LABEL br.lnls.epics-in-docker.target="no-build"
 
 FROM build-image AS build-stage
 
@@ -80,6 +85,7 @@ FROM base AS dynamic-link
 
 COPY --from=dynamic-build /opt /opt
 
+LABEL br.lnls.epics-in-docker.target="dynamic-link"
 
 FROM build-stage AS static-build
 
@@ -94,6 +100,8 @@ 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}