[sre2]

Heredocs (described in the docs[1] under "shell form") was introduced 3 years ago[1]. The flag '--squash' has been in podman for quite a while[2]. It might be time for you to upgrade your tooling.

[0]: https://docs.docker.com/reference/dockerfile/#shell-form

[1]: https://www.docker.com/blog/introduction-to-heredocs-in-dock...

[2]: https://docs.podman.io/en/latest/markdown/podman-build.1.htm...