Use static yum repo file

The file is generated from
https://shibboleth.net/downloads/service-provider/RPMS/ and the OpenSUSE
repo file doesn't exist anymore.

Dockerfile

@@ -12,8 +12,9 @@ ENV SHIBD_CONSISTENT_ADDRESS=true
 
 WORKDIR /etc/shibboleth
 
-RUN curl -Ls http://download.opensuse.org/repositories/security://shibboleth/CentOS_7/security:shibboleth.repo  --output /etc/yum.repos.d/security:shibboleth.repo \
-    && yum -y update \
+COPY shibboleth.repo /etc/yum.repos.d/
+
+RUN yum -y update \
     && yum -y install shibboleth-${SHIBD_VERSION} mysql-connector-odbc gettext mysql nc \
     && yum -y clean all
 

shibboleth.repo

@@ -0,0 +1,9 @@
+[shibboleth]
+name=Shibboleth (CentOS_7)
+# Please report any problems to https://shibboleth.atlassian.net/jira
+type=rpm-md
+mirrorlist=https://shibboleth.net/cgi-bin/mirrorlist.cgi/CentOS_7
+gpgcheck=1
+gpgkey=https://shibboleth.net/downloads/service-provider/RPMS/repomd.xml.key
+        https://shibboleth.net/downloads/service-provider/RPMS/cantor.repomd.xml.key
+enabled=1