[CI] fix for RHEL build branch

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

ci-scripts/Jenkinsfile-GitLab-Docker

@@ -235,7 +235,7 @@ pipeline {
                 myShCmd('sudo cp /etc/rhsm/ca/redhat-uep.pem tmp/ca', rem_rhel_host_flag, rem_rhel_host_user, rem_rhel_host)
                 myShCmd('sudo podman build --no-cache --target oai-amf --tag oai-amf:' + amf_tag + ' --file docker/Dockerfile.amf.rhel8.2 --build-arg EURECOM_PROXY="http://proxy.eurecom.fr:8080" . > archives/amf_podman_image_build.log 2>&1', rem_rhel_host_flag, rem_rhel_host_user, rem_rhel_host)
                 myShCmd('sudo podman image ls >> archives/amf_podman_image_build.log', rem_rhel_host_flag, rem_rhel_host_user, rem_rhel_host)
-                if ("PUSH".equals(env.gitlabActionType)) {
+                if ("MERGE".equals(env.gitlabActionType)) {
                   myShCmd('sudo podman image tag oai-amf:' + amf_tag + ' oai-amf:' + rhel_amf_tag, rem_rhel_host_flag, rem_rhel_host_user, rem_rhel_host)
                 }
               }