main -> 3.4

Dockerfile

@@ -1,6 +1,6 @@
 ARG BASE_IMAGE="us-docker.pkg.dev/libops-images/shared/isle-drupal"
 # this is set in libops.yml as "islandora-tag"
-ARG ISLANDORA_TAG=main
+ARG ISLANDORA_TAG=3.4
 FROM ${BASE_IMAGE}:${ISLANDORA_TAG}
 
 COPY --chown=100:101 . /var/www/drupal