newest head on captagent causing some config issues

[dougbtv]

[doug@talos captagent-docker]$ docker run -it --entrypoint=/bin/bash test
root@54744018e41a:/# ./run.sh 
[NOTICE] Loaded core config
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/transport_hep.xml]
[ERR] transport_hep.c:916 Unable to open configuration file: ${prefix}/etc/captagent/transport_hep.xml
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/protocol_sip.xml]
[ERR] protocol_sip.c:482 Unable to open configuration file: ${prefix}/etc/captagent/protocol_sip.xml
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/database_hash.xml]
[ERR] database_hash.c:367 Unable to open configuration file: ${prefix}/etc/captagent/database_hash.xml
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/protocol_rtcp.xml]
[ERR] protocol_rtcp.c:146 Unable to open configuration file: ${prefix}/etc/captagent/protocol_rtcp.xml
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/socket_rtcpxr.xml]
[ERR] socket_rtcpxr.c:295 Unable to open configuration file: ${prefix}/etc/captagent/socket_rtcpxr.xml
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/socket_pcap.xml]
[ERR] socket_pcap.c:678 Unable to open configuration file: ${prefix}/etc/captagent/socket_pcap.xml
[ERR] xmlread.c:134 Unable to open file: [${prefix}/etc/captagent/socket_raw.xml]
[ERR] socket_raw.c:581 Unable to open configuration file: ${prefix}/etc/captagent/socket_raw.xml

So, likely the setup in run.sh is out of date. I'll take a look at it and make a PR.

...Also, thinking of pulling a specific tag on captagent, as well. Maybe pull specific tag first and then figure out how to get forward-compatible.