我正在尝试在我的 MAC 上安装 Docker。我收到以下问题
predix-docker xxxxxx $ docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
968c69f18673: Pulling fs layer
963493e54e68: Layer already being pulled by another client. Waiting.
755b4eb93a9e: Layer already being pulled by another client. Waiting.
f3b2532b0301: Layer already being pulled by another client. Waiting.
f3bf4daa2ff2: Layer already being pulled by another client. Waiting.
6685b2154893: Layer already being pulled by another client. Waiting.
a2295636c7aa: Already exists
3035387b9e83: Already exists
Pulling repository docker.io/library/nginx
Tag latest not found in repository docker.io/library/nginx
当我检查 Docker 映像时，我没有找到 nginx 存储库。怎么下载，求大神帮忙。