diff --git a/docker-command.md b/docker-command.md
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..57c0afd255bfc6d3f3be0b5a870f8e2f79c26fe9 100644
--- a/docker-command.md
+++ b/docker-command.md
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+# Useful Docker command 
+
+## Docker is heavier than black hole 
+
+Get disk usage from Docker 
+
+`docker system df`
+
+Clean Image 
+
+`alias docker_clean_images='docker rmi $(docker images -a --filter=dangling=true -q)'`
+
+Clean container
+
+`alias docker_clean_ps='docker rm $(docker ps --filter=status=exited --filter=status=created -q)'`
+
+Clean cache 
+
+`docker builder prune`
+
+Clean system 
+
+docker system prune
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