Thanks Geaves.
Yes, on my other devices I can see the 'swirl' logo for OMV.
I have also installed shellinabox - and your instructions worked a treat...
Error log here:...I'm not an expert in reading the log, by my network starts at 192.168.1.1 (not 172.17.0.1)
2018/07/28 23:21:22] minidlna.c:1034: warn: Starting MiniDLNA version 1.1.6.
[2018/07/28 23:21:22] minidlna.c:340: warn: Creating new database at /var/cache/minidlna/files.db
[2018/07/28 23:21:22] minidlna.c:1074: warn: HTTP listening on port 8200
[2018/07/28 23:21:22] scanner.c:726: warn: Scanning /var/lib/minidlna
[2018/07/28 23:21:22] scanner.c:815: warn: Scanning /var/lib/minidlna finished (0 files)!
[2018/07/28 23:21:22] playlist.c:125: warn: Parsing playlists...
[2018/07/28 23:21:22] playlist.c:259: warn: Finished parsing playlists.
[2018/07/28 23:21:22] minidlna.c:154: warn: received signal 15, good-bye
[2018/07/29 08:19:47] minissdp.c:797: error: sendto(udp_shutdown=9): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:797: error: sendto(udp_shutdown=9): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:19:47] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:797: error: sendto(udp_shutdown=9): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:797: error: sendto(udp_shutdown=9): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/29 08:21:39] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/31 21:10:42] minissdp.c:797: error: sendto(udp_shutdown=9): Network is unreachable
[2018/07/31 21:10:42] minissdp.c:797: error: sendto(udp_shutdown=9): Network is unreachable
[2018/07/31 21:10:42] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable
[2018/07/31 21:10:42] minissdp.c:314: error: sendto(udp_notify=9, 172.17.0.1): Network is unreachable