[CI] Use clang when building.

Author: q82419

.github/workflows/build.yml

@@ -10,10 +10,10 @@ on:
 
 jobs:
   build_amd64:
-    name: Build WasmEdge-storage using g++ on amd64 platform
+    name: Build WasmEdge-storage using clang++ on amd64 platform
     runs-on: ubuntu-latest
     container:
-      image: wasmedge/wasmedge:ubuntu-build-gcc
+      image: wasmedge/wasmedge:ubuntu-build-clang
     steps:
     - name: Checkout code
       uses: actions/checkout@v2

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     name: Create Release
     runs-on: ubuntu-latest
     container:
-      image: wasmedge/wasmedge:ubuntu-build-gcc
+      image: wasmedge/wasmedge:ubuntu-build-clang
     outputs:
       version: ${{ steps.prep.outputs.version }}
       upload_url: ${{ steps.create_release.outputs.upload_url }}
@@ -35,11 +35,11 @@ jobs:
         draft: true
         prerelease: false
   build_and_upload_amd64:
-    name: Build WasmEdge-storage using g++ on amd64 platform
+    name: Build WasmEdge-storage using clang++ on amd64 platform
     needs: [create]
     runs-on: ubuntu-latest
     container:
-      image: wasmedge/wasmedge:ubuntu-build-gcc
+      image: wasmedge/wasmedge:ubuntu-build-clang
     steps:
     - name: Checkout code
       uses: actions/checkout@v2