This is the TIER upstream Shibboleth SP container.
It is based from CentOS 7 and includes httpd, mod_ssl, and the current shibboleth SP.
Files you must supply/override in your downstream builds:
The SP's private key and corresponding certificate (very important!) can be generated in your downstream container like this: RUN /usr/local/bin/shibboleth_keygen.sh -o /etc/shibboleth -f
...that command generates/overwrites the following files: /etc/shibboleth/sp-key.pem /etc/shibboleth/sp-cert.pem
/etc/httpd/conf.d/ssl.conf including: ServerName fqdn:port UseCanonicalName On
/etc/shibboleth/shibboleth2.xml including: entityID