Test script for --cmd option on containertool

Author: ebariaux

scripts/test-containertool-cmd.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the SwiftContainerPlugin open source project
+##
+## Copyright (c) 2025 Apple Inc. and the SwiftContainerPlugin project authors
+## Licensed under Apache License v2.0
+##
+## See LICENSE.txt for license information
+## See CONTRIBUTORS.txt for the list of SwiftContainerPlugin project authors
+##
+## SPDX-License-Identifier: Apache-2.0
+##
+##===----------------------------------------------------------------------===##
+
+#
+# This script assumes that the Static Linux SDK has already been installed
+#
+
+log() { printf -- "** %s\n" "$*" >&2; }
+error() { printf -- "** ERROR: %s\n" "$*" >&2; }
+fatal() { error "$@"; exit 1; }
+
+set -euo pipefail
+
+RUNTIME=${RUNTIME-"docker"}
+
+#
+# Create a test package
+#
+PKGPATH=$(mktemp -d)
+swift package --package-path "$PKGPATH" init --type executable --name hello
+
+cleanup() {
+  log "Deleting temporary package $PKGPATH"
+  rm -rf "$PKGPATH"
+}
+trap cleanup EXIT
+
+#
+# Build and package an aarch64 binary
+#
+swift build --package-path "$PKGPATH" --swift-sdk aarch64-swift-linux-musl
+
+IMGREF=$(swift run containertool --repository localhost:5000/elf_test "$PKGPATH/.build/aarch64-swift-linux-musl/debug/hello" --from scratch --cmd "arg1" "--option" "opt" "--flag")
+$RUNTIME pull "$IMGREF"
+CMD=$($RUNTIME inspect "$IMGREF" --format "{{.Config.Cmd}}")
+if [ "$CMD" = "[arg1 --option opt --flag]" ] ; then
+  log "cmd option: PASSED"
+else
+  fatal "cmd option: FAILED - cmd was $CMD; expected [arg1 --option opt --flag]"
+fi