release-5.33 Uses Wrong Version of Postgres

[davidbartonau]

I just tried upgrading from 5.31 and mattermost keeps restarting with the error:

Error: cannot create store: minimum required postgres version is 10.0; found 9.426

The db Dockerfile contains: FROM postgres:9.4-alpine

As I understand it, this means a manual backup and restore of the database, since the postgres container doesn't automatically upgrade data. I'm going to give it a go and report back here.

[davidbartonau]

Unfortunately, postgres:10-alpine does not have python-dev and since I don't know python or alpine Linux, I am a bit stuck at this point.

[EugenMayer]

#529

[bor8]

Make good backup and do:

#489 (comment)

Read the whole ticket when you have problems.