As outlined in a [Swift forums post in November ’21](https://forums.swift.org/t/swiftnio-swift-version-support/53232), SwiftNIO will only support the latest non-patch Swift release and the 2 immediately prior non-patch versions.
- drop support for Swift 5.2 and 5.3.
- update CI for Swift 5.4 to run on bionic instead of focal to ensure that we still test bionic.
- add a CI job for Swift 5.7
Motivation:
Docker shell was incorrectly using the swift-nio docker image
rather than the swift-nio-transport-services one.
Modifications:
Change docker compose file to use the correct image.
Result:
Correct image will be used for docker shell.
Motivation:
It's important that transport-services compiles and does nothing
on linux so it can be used in builds which just do the right thing
on all platforms.
Modifications:
Add basic docker-compose files based on those from swift-nio
Result:
It's possible to run docker on this repo to run the tests.
Fabian Fett
Cory Benfield
David Evans
Johannes Weiss
Peter Adams