Merge pull request #54 from jina-ai/fix-is-docker-running

fix: is docker running

src/apis/jina_cloud.py

@@ -185,7 +185,7 @@ def run_locally(executor_name, microservice_version_path):
         use_docker = True
     else:
         click.echo('''
-Docker daemon doesn\'t seem to be running.
+Docker daemon doesn\'t seem to be running (possible reasons: incorrect docker installation, docker command isn\'t in system path, insufficient permissions, docker is running but unrespnsive).
 It might be important to run your microservice within a docker container.
 Your machine might not have all the dependencies installed.
 You have 3 options:

src/utils/io.py

@@ -1,13 +1,9 @@
 import os
 
-import concurrent.futures
-from typing import Generator
+import subprocess
 import sys
 from contextlib import contextmanager
 
-import docker
-from docker import APIClient
-
 
 def get_microservice_path(path, microservice_name, packages, num_approach, version):
     package_path = '_'.join(packages)
@@ -44,14 +40,12 @@ def suppress_stdout():
 
 def is_docker_running():
     try:
-        from hubble import __windows__
-        _client = docker.from_env()
-        # low-level client
-        _raw_client = APIClient(
-            base_url=docker.constants.DEFAULT_NPIPE
-            if __windows__
-            else docker.constants.DEFAULT_UNIX_SOCKET
-        )
-    except Exception:
+        if sys.platform.startswith('win'):
+            command = 'docker info'
+        else:
+            command = 'docker info 2> /dev/null'
+
+        subprocess.check_output(command, shell=True)
+        return True
+    except subprocess.CalledProcessError:
         return False
-    return True