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 # registry-cli
-Scripts for easy manipulation of docker-registry from command line (and from scripts)
+registry.py is a script for easy manipulation of docker-registry from command line (and from scripts)
+
+
+# Installation
+
+Download registry.py and set it as executable
+  chmod 755 registry.py
+It uses requests python module, so you may need to install it as well:
+  pip install requests
+
+
+# Listing images
+
+The below command will list all images and all tags in your registry:
+  registry.py -l user:pass -r https://example.com:5000
+
+List all images, tags and layers:
+  registry.py -l user:pass -r https://example.com:5000 --layers
+
+List particular image(s) or image:tag (all tags of ubuntu and alpine in this example)
+  registry.py -l user:pass -r https://example.com:5000 -i ubuntu alpine
+  
+Same as above but with layers
+  registry.py -l user:pass -r https://example.com:5000 -i ubuntu alpine --layers
+
+  
+# Deleting images 
+
+Keep only last 10 versions (useful for CI):
+Delete all tags of all images but keep last 10 tags (you can put it to your build script
+after building images)
+  registry.py -l user:pass -r https://example.com:5000 --delete
+
+  If number of tags is less then 10 it will not delete any
+
+You can specify number of tags to keep instead of 10, e.g. 5:
+  registry.py -l user:pass -r https://example.com:5000 --delete --num 5
+
+Delete all tags for particular image (e.g. delete all ubuntu tags):
+  registry.py -l user:pass -r https://example.com:5000 -i ubuntu --delete-all
+  
+Delete all tags for all images (do you really want to do it?):
+  registry.py -l user:pass -r https://example.com:5000 --delete-all
+  
+  
+# Important notes: 
+
+1. docker registry API does not actually delete tags or images, it marks them for later 
+garbage collection. So, make sure you run something like below 
+(or put them in your crontab):
+   docker-compose -f [path_to_your_docker_compose_file] run \
+       registry bin/registry garbage-collect \
+       /etc/docker/registry/config.yml
+
+or (if you are not using docker-compose):
+
+   docker run registry:2 bin/registry garbage-collect \
+       /etc/docker/registry/config.yml
+       
+for more detail on garbage collection read here:
+   https://docs.docker.com/registry/garbage-collection/
+
+2. Docker registry does not enable image deletion by default. Make sure to enable it by
+either creating environment variable 
+  REGISTRY_STORAGE_DELETE_ENABLED: "true"
+or adding relevant configuration option to the docker-registry's config.yml.
+For more on docker-registry configuration, read here:
+  https://docs.docker.com/registry/configuration/
+  
+Please feel free to contact me at anoxis@gmail.com if you wish to add more functionality 
+or want to contribute.
+  
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