build: disable --output for podman-remote clients

Disable `build --output` for remote clients and update docs.

[NO NEW TESTS NEEDED]
[NO TESTS NEEDED]

Signed-off-by: Aditya R <arajan@redhat.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

2 files changed, 6 insertions, 1 deletions

diff --git a/cmd/podman/images/build.go b/cmd/podman/images/build.go
index 1ceb63684..3ea60e18a 100644
--- a/cmd/podman/images/build.go
+++ b/cmd/podman/images/build.go
@@ -190,6 +190,7 @@ func buildFlags(cmd *cobra.Command) {
 		_ = flags.MarkHidden("tls-verify")
 		_ = flags.MarkHidden("compress")
 		_ = flags.MarkHidden("volume")
+		_ = flags.MarkHidden("output")
 	}
 }
 
@@ -201,6 +202,10 @@ func build(cmd *cobra.Command, args []string) error {
 		return errors.New("cannot specify --squash, --squash-all and --layers options together")
 	}
 
+	if cmd.Flag("output").Changed && registry.IsRemote() {
+		return errors.New("'--output' option is not supported in remote mode")
+	}
+
 	// Extract container files from the CLI (i.e., --file/-f) first.
 	var containerFiles []string
 	for _, f := range buildOpts.File {
diff --git a/docs/source/markdown/podman-build.1.md b/docs/source/markdown/podman-build.1.md
index 63ed6f9da..b372bfce6 100644
--- a/docs/source/markdown/podman-build.1.md
+++ b/docs/source/markdown/podman-build.1.md
@@ -479,7 +479,7 @@ Windows base images, so using this option is usually unnecessary.
 
 Output destination (format: type=local,dest=path)
 
-The --output (or -o) option extends the default behavior of building a container image by allowing users to export the contents of the image as files on the local filesystem, which can be useful for generating local binaries, code generation, etc.
+The --output (or -o) option extends the default behavior of building a container image by allowing users to export the contents of the image as files on the local filesystem, which can be useful for generating local binaries, code generation, etc. (This option is not available with the remote Podman client, including Mac and Windows (excluding WSL2) machines)
 
 The value for --output is a comma-separated sequence of key=value pairs, defining the output type and options.