| `KANIKO_BIN` | no | `/kaniko/executor` | Specifies the path to `kaniko` binary. By default, the path used by `gcr.io/kaniko-project/executor` is used. |
| `KANIKO_IMAGE_REPOSITORY` | yes | | Indicates the repository prefix to be used for Docker image push. e.g. `gcr.io/google-containers` |
| `KANIKO_IMAGE_NAME` | yes | | Indicates the repository name to be used for Docker image push. e.g. `pause` |
| `KANIKO_IMAGE_TAGS` | yes | | Specifies a comma-separated list of container image tags. e.g. `latest,v1.0.0,v1.0.0-1` |