feat: spack spec output

containers/jug/dev.Dockerfile

@@ -153,6 +153,7 @@ find /var/cache/spack/blobs/sha256/ -ignore_readdir_race -atime +7 -delete
 echo -e "\n  view: false" >> ${SPACK_ENV}/spack.yaml
 spack env activate --dir ${SPACK_ENV}
 spack concretize --fresh --force
+spack spec
 make --jobs ${jobs} --keep-going --directory /opt/spack-environment \
   SPACK_ENV=${SPACK_ENV} \
   BUILDCACHE_OCI_PROMPT="eicweb" \
@@ -205,6 +206,7 @@ if [ "${JUGGLER_VERSION}" != "df87bf1f8643afa8e80bece9d36d6dc26dfe8132" ] ; then
   spack deconcretize -y --all juggler
 fi
 spack concretize --fresh --force
+spack spec
 make --jobs ${jobs} --keep-going --directory /opt/spack-environment \
   SPACK_ENV=${SPACK_ENV} \
   BUILDCACHE_OCI_FINAL="eicweb"