Update CI (#28)

- Swift 5.8 docker images are available
- Add docker-compose file for Swift 5.9

Author: yim-lee

docker/docker-compose.2004.58.yaml

@@ -6,7 +6,8 @@ services:
     image: swift-metrics:20.04-5.8
     build:
       args:
-        base_image: "swiftlang/swift:nightly-5.8-focal"
+        ubuntu_version: "focal"
+        swift_version: "5.8"
 
   test:
     image: swift-metrics:20.04-5.8

docker/docker-compose.2204.59.yaml

@@ -0,0 +1,19 @@
+version: "3"
+
+services:
+
+  runtime-setup:
+    image: swift-metrics:22.04-5.9
+    build:
+      args:
+        base_image: "swiftlang/swift:nightly-5.9-jammy"
+
+
+  test:
+    image: swift-metrics:22.04-5.9
+    environment:
+      - FORCE_TEST_DISCOVERY=--enable-test-discovery
+      #- SANITIZER_ARG=--sanitize=thread
+
+  shell:
+    image: swift-metrics:22.04-5.9