Only pushing docker base images to registry when version changes

utils.py

@@ -1,5 +1,7 @@
 import distutils.cmd
 
+import requests
+
 
 class DeployDockerBasesCommand(distutils.cmd.Command):
     """ A command that builds docker bases for the DockerBackend and deploys them to dockerhub.
@@ -15,11 +17,22 @@ def finalize_options(self):
         pass
 
     def run(self):
+        import arca
         from arca import DockerBackend
 
         backend = DockerBackend()
         backend.check_docker_access()
 
+        response = requests.get(
+            "https://hub.docker.com/v2/repositories/mikicz/arca/tags/",
+            params={"page_size": 1000}
+        )
+        response = response.json()
+
+        if arca.__version__ in [x["name"] for x in response["results"]]:
+            print("This version was already pushed into the registry.")
+            return
+
         base_arca_name, base_arca_tag = backend.get_arca_base(False)
 
         print(f"Built image {base_arca_name}:{base_arca_tag}")