fix(ci): set correct arch/os for published container images (#991)

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

build/stacker-conformance.yaml

@@ -42,6 +42,8 @@ build:
   build_only: true
 
 "${{REPO_NAME:zot}}":
+  os: ${{OS}}
+  arch: ${{ARCH}}
   from:
     type: docker
     url: docker://gcr.io/distroless/base:latest-${{ARCH}}

build/stacker-zb.yaml

@@ -20,6 +20,8 @@ build:
   build_only: true
 
 "${{REPO_NAME:zb}}":
+  os: ${{OS}}
+  arch: ${{ARCH}}
   from:
     type: docker
     url: docker://gcr.io/distroless/base:latest-${{ARCH}}

build/stacker-zxp.yaml

@@ -40,6 +40,8 @@ build:
   build_only: true
 
 "${{REPO_NAME:zxp}}":
+  os: ${{OS}}
+  arch: ${{ARCH}}
   from:
     type: docker
     url: docker://gcr.io/distroless/base:latest-${{ARCH}}

build/stacker.yaml

@@ -41,6 +41,8 @@ build:
   build_only: true
 
 "${{REPO_NAME:zot}}":
+  os: ${{OS}}
+  arch: ${{ARCH}}
   from:
     type: docker
     url: docker://gcr.io/distroless/base:latest-${{ARCH}}