podman create: building local pause image: do not read ignore files

Make sure to ignore local {container,docker}ignore files when building a
local pause image.  Otherwise, we may mistakenly not be able to copy
catatonit into the build container.

Fixes: containers#13529
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

pkg/specgen/generate/pod_create.go

@@ -56,6 +56,7 @@ ENTRYPOINT ["/catatonit", "-P"]`, catatonitPath)
 		CommonBuildOpts: &buildahDefine.CommonBuildOptions{},
 		Output:          imageName,
 		Quiet:           true,
+		IgnoreFile:      "/dev/null", // makes sure to not read a local .ignorefile (see #13529)
 		IIDFile:         "/dev/null", // prevents Buildah from writing the ID on stdout
 	}
 	if _, _, err := rt.Build(context.Background(), buildOptions, tmpF.Name()); err != nil {

test/system/070-build.bats

@@ -605,7 +605,7 @@ EOF
     done
 }
 
-# Regression test for #9867
+# Regression test for #9867 and #13529
 # Make sure that if you exclude everything in context dir, that
 # the Containerfile/Dockerfile in the context dir are used
 @test "podman build with ignore '*'" {
@@ -620,6 +620,10 @@ cat >$tmpdir/.dockerignore <<EOF
 *
 EOF
 
+    # Make sure that building a local pause image ignores ignore-files (#13529)
+    run_podman pod create
+    run_podman pod rm $output
+
     run_podman build -t build_test $tmpdir
 
     # Rename Containerfile to Dockerfile