add docker sdk

syncimages/app/docker-util.py

@@ -0,0 +1,24 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+import docker
+
+client = docker.DockerClient(base_url='unix://var/run/docker.sock')
+
+
+def exist_images(name):
+    # image = client.images.get('hello-world')
+    try:
+        client.images.get(name)
+        return True
+    except docker.errors.ImageNotFound:
+        return False
+    except docker.errors.APIError as err:
+        print(err)
+
+
+if __name__ == '__main__':
+    print(exist_images('alpine:3.15'))
+    print(exist_images('alpine:latest'))
+
+