Update .gitlab-ci.yml to add random uid for avahi user. Per https://github.com/lxc/lxc/issues/25

.gitlab-ci.yml

@@ -220,6 +220,13 @@ test:offline:
     - apt-get install --assume-yes texlive-latex-extra-doc texlive-latex-recommended texlive-latex-recommended-doc texlive-pictures texlive-pictures-doc texlive-pstricks texlive-pstricks-doc texlive-science texlive-science-doc
     # Start the avahi and dbus services:
     - service dbus start
+    
+    # Set up a random uid for the avahi user before starting the daemon. This
+    # *may* have to go in the dev container first. 
+    
+    - randuid=$((9000 + $RANDOM % 1000))
+    - adduser --uid $randuid avahi
+    
     - service avahi-daemon start
     # Get the necessary ROM data:
     - git lfs install
@@ -230,7 +237,7 @@ test:offline:
     - make -f Makefile.offline_tutorial_test
     - cp -rf ./WEBDIR/gstlal_offline_tutorial public/
   artifacts:
-    expire_in: 3h
+    expire_in: 24h
     paths:
       - gstlal-inspiral/tests
       - public