UPSTREAM: <carry>: fix xplat compile for of-tools image; hide utest files from git; use rhel8 art builder image

Signed-off-by: Jordan Keister <[email protected]>

Author: grokspawn

.gitignore

@@ -468,3 +468,6 @@ scripts/**/*.crc.e2e.patch.yaml
 
 # downstream sync sha files
 *.cherrypick
+
+# unit test artifacts
+vendor/github.com/operator-framework/operator-registry/pkg/lib/indexer/index.Dockerfile*

operator-framework-tools.Dockerfile

@@ -14,9 +14,10 @@ RUN make build/registry cross
 
 FROM scratch 
 
+# copy a rhel-specific instance
 COPY --from=builder /src/bin/opm /tools/opm-rhel9
-COPY --from=builder /src/bin/darwin-amd64-opm /tools/darwin-amd64-opm
-COPY --from=builder /src/bin/windows-amd64-opm /tools/windows-amd64-opm
+# copy all other generated binaries, including any cross-compiled
+COPY --from=builder /src/bin/*opm /tools/
 
 # copy the dynamically-linked versions to /tools with a -rhel8 suffix
 COPY --from=builder-rhel8 /src/bin/opm /tools/opm-rhel8