There's no such symbol as expand_template_rule in @aspect_bazel_lib//lib:expand_template.bzl

[grepwood]

The code in https://github.com/bazel-contrib/rules_oci/blob/main/docs/push.md#examples is incorrect.
It says we have to load:

load("@aspect_bazel_lib//lib:expand_template.bzl", "expand_template_rule")

But then we use a function that's not loaded:

expand_template(
    name = "stamped",
    out = "_stamped.tags.txt",
    template = ["0.0.0"],
    stamp_substitutions = {"0.0.0": "{{BUILD_EMBED_LABEL}}"},
)

[grepwood]

I tried to find out more about stamped tags having read https://github.com/bazel-contrib/rules_oci/blob/main/docs/push.md#oci_push so I clicked the link to https://github.com/bazel-contrib/rules_oci/blob/main/examples/push/stamp_tags.bzl and it's 404...