🐞 Add docker best practices

docker_best_practices.md

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+# Docker Best Practices
+
+## Installation in macOS
+
+```
+brew cask install docker
+```
+
+### Shared Folders
+
+Removing some of the default shared folders can decrease CPU usage (e.g. remove `/Volumes` and `/private`). 
+
+Check storage with:
+
+```
+$ docker info |grep Storage
+```
+
+### Performance
+
+In case of performance problems you can run:
+
+```
+docker run --rm=true -it --privileged --pid=host \
+    <image name> /usr/bin/top
+```
+
+### Cleaning Up
+
+See disk space:
+
+```
+docker system df
+```
+
+
+Remove stopped containers, dangling images, the build cache, and unused networks:
+
+```
+docker system prune
+```