Use official Swift 5.2 container for CI

mattt · mattt · commit 051a4dc2806e · 2020-03-28T06:02:59.000-07:00
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     container:
-      image: swiftlang/swift:5.2
+      image: swift:5.2
 
     steps:
       - name: Checkout
