Document that zstd:chunked is downgraded to zstd when encrypting

A part of containers/common#2117 . Signed-off-by: Miloslav Trmač <[email protected]>
containers · Sep 30, 2024 · 5193f21 · 5193f21
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commit 5193f21
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diff --git a/docs/buildah-push.1.md b/docs/buildah-push.1.md
@@ -41,6 +41,7 @@ The default certificates directory is _/etc/containers/certs.d_.
 **--compression-format** *format*
 
 Specifies the compression format to use.  Supported values are: `gzip`, `zstd` and `zstd:chunked`.
+`zstd:chunked` is incompatible with encrypting images, and will be treated as `zstd` with a warning in that case.
 
 **--compression-level** *level*