Replace dockerfiles with containerfiles

Signed-off-by: divyansh42 <diagrawa@redhat.com>

.github/workflows/multiarch.yml

@@ -38,9 +38,9 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y qemu-user-static
 
-      - name: Create Dockerfile
+      - name: Create Containerfile
         run: |
-          cat > Dockerfile<<EOF
+          cat > Containerfile<<EOF
 
           ARG ARCH
           FROM docker.io/\${ARCH}/alpine:3.14
@@ -58,8 +58,8 @@ jobs:
           tags: ${{ env.IMAGE_TAG }}
           arch: ${{ matrix.arch }}
           build-args: ARCH=${{ matrix.arch }}
-          dockerfiles: |
-            ./Dockerfile
+          containerfiles: |
+            ./Containerfile
 
       - name: Echo Outputs
         run: |