use static sdk with plugin

Author: euanh

.github/workflows/pull_request.yml

@@ -58,14 +58,14 @@ jobs:
                   swift package init --type executable
                   swift build --swift-sdk x86_64-swift-linux-musl
 
-            - name: plugin static stdlib
+            - name: plugin sdk
               run: |
                   pwd
-                  mkdir plugin-static-stdlib
-                  cd plugin-static-stdlib
+                  mkdir plugin-sdk
+                  cd plugin-sdk
                   swift package init --type executable
                   swift package add-dependency https://github.com/apple/swift-container-plugin --from 0.2.0
-                  swift package --static-swift-stdlib build-container-image --registry localhost:5000/test-static-stdlib
+                  swift package --swift-sdk x86_64-swift-linux-musl build-container-image --registry localhost:5000/test-static-stdlib
 
             - name: Build the example
               run: |