Switch to RockyLinux 9 and update shibd to 3.5.0

Dockerfile

@@ -1,12 +1,12 @@
-FROM centos:7
+FROM rockylinux:9.3
 
 LABEL maintainer="pan.luo@ubc.ca"
 
 # https://wiki.shibboleth.net/confluence/display/SP3/LinuxRH6
 ENV LD_LIBRARY_PATH=/opt/shibboleth/lib64:$LD_LIBRARY_PATH
 # Shibd log level
 ENV LOG_LEVEL=INFO
-ENV SHIBD_VERSION=3.2.1-3.1
+ENV SHIBD_VERSION=3.5.0-1.el9
 ENV SHIBD_REMOTE_USER=somerandomname
 ENV SHIBD_CONSISTENT_ADDRESS=true
 ENV SHIBBOLETH_IDP_METADATA_BACKUPFILE=/var/cache/shibboleth/shibboleth-metadata-idp.xml
@@ -19,7 +19,9 @@ WORKDIR /etc/shibboleth
 COPY shibboleth.repo /etc/yum.repos.d/
 
 RUN yum -y update \
-    && yum -y install shibboleth-${SHIBD_VERSION} mysql-connector-odbc gettext mysql nc \
+    && dnf install -y 'dnf-command(config-manager)' \
+    && dnf config-manager --set-enabled crb \
+    && yum -y install shibboleth-${SHIBD_VERSION} mariadb-connector-odbc gettext mysql nc \
     && yum -y clean all
 
 COPY shibboleth2.xml-template /etc/shibboleth/

shibboleth.repo

@@ -1,8 +1,8 @@
 [shibboleth]
-name=Shibboleth (CentOS_7)
+name=Shibboleth (rockylinux9)
 # Please report any problems to https://shibboleth.atlassian.net/jira
 type=rpm-md
-mirrorlist=https://shibboleth.net/cgi-bin/mirrorlist.cgi/CentOS_7
+mirrorlist=https://shibboleth.net/cgi-bin/mirrorlist.cgi/rockylinux9
 gpgcheck=1
 gpgkey=https://shibboleth.net/downloads/service-provider/RPMS/repomd.xml.key
         https://shibboleth.net/downloads/service-provider/RPMS/cantor.repomd.xml.key