我在 Macbook 上按照本教程构建示例 Docker 映像，但是当我尝试运行以下命令时：
docker build -t getting-started .
我收到以下错误：
[+] Building 3.2s (15/24)
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 1.05kB 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 34B 0.0s
=> [internal] load metadata for docker.io/library/nginx:alpine 2.7s
=> [internal] load metadata for docker.io/library/python:alpine 2.7s
=> [internal] load metadata for docker.io/library/node:12-alpine 2.7s
=> [internal] load build context 0.0s
=> => transferring context: 7.76kB 0.0s
=> [base 1/4] FROM docker.io/library/python:alpine@sha256:94cfb962c71da780c5f3d34c6e9d1e01702b8be1edd2d450c24aead4774aeefc …