Add HEP_OSlibs for LCG stacks

alma9-base/Dockerfile

@@ -3,3 +3,9 @@ FROM cern/alma9-base:20240701-2
 # Workaround for old dcache doors
 RUN dnf -y install crypto-policies-scripts && dnf clean all
 RUN update-crypto-policies --set DEFAULT:SHA1
+
+# LCG stack requirements
+RUN dnf -y install https://linuxsoft.cern.ch/wlcg/el9/x86_64/wlcg-repo-1.0.0-1.el9.noarch.rpm && \
+    dnf -y install HEP_OSlibs && \
+    dnf clean all
+