creating trhe authfile and moved the definition to the skopeo step

.forgejo/workflows/container-build.yml

@@ -3,8 +3,6 @@ on:
   push:
   workflow_dispatch:
 
-env:
-  REGISTRY_AUTH_FILE: ${{env.RUNNER_TEMP}}/auth.json
 
 jobs:
   container_build:
@@ -15,7 +13,10 @@ jobs:
       - name: Container build
         run: "./build_container.sh"
       - name: Container push
+        env:
+          REGISTRY_AUTH_FILE: ${{env.RUNNER_TEMP}}/auth.json
         run: |
+          echo "{}">"$REGISTRY_AUTH_FILE"
           skopeo copy --additional-tag ${{ env.GITHUB_RUN_NUMBER}} --dest-precompute-digests --dest-registry-token=${{ env.GITHUB_TOKEN }} containers-storage:localhost/keycloak:latest ${GITHUB_SERVER_URL//https:/docker:}/${{ env.GITHUB_REPOSITORY }}:latest
       - name: Cleanup
         run: |