1052: Upgrade alpine to 3.10 r=mergify[bot] a=Nebukadneza
## What type of PR?
enhancement / bug-fix
## What does this PR do?
Upgrade the alpine base image to 3.10 and clean up ensuing problems. Also directly uses postfix foreground-running with stdout logging.
### Related issue(s)
closes#1049closes#1051
Note: This is a duplicate effort of #1050#1039 …
## Prerequistes
- [X] In case of feature or enhancement: documentation updated accordingly
- [X] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
With these images, I have tested manually:
- Email receive to user
- on main domain
- on additional domain
- via an alias on main-domain
- via an alias on additional domain
- via catchall
- Email reject
- of eicar testfiles
- Email sending
- Fetchmail from legacy POP
- Front LE certificates
- Simple overriding for postfix (only postfix.cf), nginx, dovecot, rspamd
- Creating a CalDAV calendar and CardDAV entry using davx5
I have not (yet) tested:
- certdumper
- databases other than sqlite
Todo:
- [x] Get rid of podop at `git+https://github.com/Nebukadneza/Podop.git@fix_py37` once https://github.com/Mailu/Podop/pull/6 is merged
- [x] Bend Mailustart back to original repository
- [x] Test more (? also help wanted ?)
Co-authored-by: Thomas Sänger <thomas@gecko.space>
Co-authored-by: Dario Ernst <dario@kanojo.de>
Co-authored-by: Reto Glauser <git@blinkeye.ch>
2788909a13