Synology Docker MS2.1 update

[jamief]

Hi Simon

Thanks for the suggested steps. While I got there in the end, it wasn't so easy. I'll include my experience in case it helps anyone else who runs into difficult with Docker updates.

- Steps 1 & 2 fixed the fundamental problem of the error during DSM package installation
- I use Portainer to manage Docker containers, and not for example Docker compose, so it is easier for me to migrate an existing container definition to keep all the network, volume & port mappings. This meant that I couldn't strictly follow your steps 5 & 6. Also for Docker use without compose, if you use MinimStreamer, you need to remember to copy ffmpeg to somewhere in the path like /usr/bin in the container (I keep a copy in the mapped MinimServer volume, then go to the container's console in Portainer and enter "cp MinimServer/ffmpeg /usr/bin").
- I'm completely confused about profiles. It looks to me like they aren't working. I clicked to export my default (active) profile, but I subsequently couldn't find anything saved with current date in the MinimServer folder or subfolders (maybe not saved because it hadn't changed). I had an old one on my PC that I imported, however, I've not be able to "activate" it. Similarly, I can't "view" any profiles: they are listed, but View window shows nothing. As my config did restore, I guess that the old default profile was current, and this was kept during the package upgrade, meaning the profile parts of your steps 3 and 5 weren't needed.
- While I was trying to sort this out, I had MinimWatch reporting an auto-named instance of the server, while the config web page was showing my chosen server name. This resolved itself at some point, not sure why they were different and then the same... this had me searching for multi instances, etc for a while.

Thanks again for the help.