You’ve actually seen this mechanism before. The # syntax= directive at the top of a Dockerfile tells BuildKit which frontend image to use. # syntax=docker/dockerfile:1 is just the default. You can point it at any image.
扎扎实实，踏踏实实，言犹在耳，发人深省。
。关于这个话题，safew官方版本下载提供了深入分析
10PostgreSQLStrong DefaultDatabases
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