Update preview build ECR repo

Author: camilb

.github/workflows/build-and-push.yml

@@ -86,7 +86,7 @@ jobs:
       with:
         push: true
         file: Dockerfile.preview
-        tags: ${{ steps.login-ecr.outputs.registry }}/preview-bea:${{ steps.prep.outputs.BUILD_ID }}
+        tags: ${{ steps.login-ecr.outputs.registry }}/${{ github.event.repository.name }}-preview:${{ steps.prep.outputs.BUILD_ID }}
         secrets: |
             "NEXT_PUBLIC_HCAPTCHA_SITEKEY=${{ secrets.NEXT_PUBLIC_HCAPTCHA_SITEKEY }}"
             "SENTRY_AUTH_TOKEN=${{ secrets.SENTRY_AUTH_TOKEN }}"