Add CI test script

ci_test.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# ci_test - Build all Dockerfiles -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2019 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See https://swift.org/LICENSE.txt for license information
+# See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+import subprocess
+import sys
+import os
+
+
+def run_command(cmd):
+    print("Running: {}".format(cmd))
+    p = subprocess.Popen(cmd, shell=True)
+    return p.wait()
+
+
+def get_dockerfiles():
+    dockerfiles = []
+    docker_dir = os.path.dirname(os.path.realpath(__file__))
+    for root, dirs, files in os.walk(docker_dir):
+        for file in files:
+            if file == "Dockerfile":
+                 dockerfiles.append(root)
+    dockerfiles.sort(reverse=True)
+    return dockerfiles
+
+
+def print_results(results):
+    sorted(results.items(), key=lambda x: x[1])
+    print("=======================")
+    for dockerfile in results:
+        print("{}: {}".format(dockerfile, results[dockerfile]))
+    print("=======================")
+
+
+def main():
+    print("--- Running Docker Tests ---")
+    results = {}
+    suite_status = True
+    dockerfiles = get_dockerfiles()
+    for dockerfile in dockerfiles:
+        print("Testing {}".format(dockerfile))
+        cmd = "docker build {}".format(dockerfile)
+        status = run_command(cmd)
+        results[dockerfile] = status
+        if status != 0:
+            suite_status = False
+            results[dockerfile] = "FAILED"
+        else:
+            results[dockerfile] = "PASSED"
+        print("--- [{}] - {} ---".format(results[dockerfile], dockerfile))
+
+
+    print_results(results)
+    if suite_status == False:
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    try:
+        sys.exit(main())
+    except KeyboardInterrupt:
+        sys.exit(1)