🆕 Add Docker client initialization and remote image check functions

main.py

@@ -1,10 +1,32 @@
 import docker
+from docker import DockerClient
+from docker.errors import NotFound
+from docker.models.images import RegistryData
+
+
+def build_client() -> DockerClient:
+    client = docker.from_env()
+    return client
+
+
+def check_remote_image(client: DockerClient, tag: str) -> bool:
+    try:
+        registry_data: RegistryData = client.images.get_registry_data(tag)
+        print(f"image name: {registry_data.image_name}")
+        print(f"id        : {registry_data.id}")
+        print(f"short_id  : {registry_data.short_id}")
+        print(f"attrs     : {registry_data.attrs}")
+        return True
+    except NotFound:
+        print(f"{tag} not found")
+        return False
 
 
 def main():
-    client = docker.from_env()
+    client = build_client()
 
     print(client)
+    check_remote_image(client, "docker.m.daocloud.io/ubuntu:24.04")
 
 
 if __name__ == "__main__":