High Availability Update

[avenger11]

This is for enhancement:

Can the update be done this way to enable High Availability ?

• First download the new image
• Create a new container based on original volume data without publishing any port
• Start a custom script to check if the update works well
• Remove published port from obsolete container and open port on the new container
• Kill the old container

That would be awesome specifically for home assistant, where there is update every weeks. My wife would stop complaining that I do to many update and the light stopped working during the restart. 😄

[MichelFR]

This may be possible to implement by using the health-check feature in docker. We could start a updated container and check its health status. If its healthy the old container could be removed and the new container could expose the same ports.

In generall this should be possible.

Currently i have alot of other features i want to implement but ill add this to my todo list