Add docker snippets md file.

README.md

@@ -1,2 +1,5 @@
 # snippets
 
+A repository to allow users to quickly create, share, and manage small code snippets or notes directly within the Gitea platform.
+
+- [Docker](docker)

docker.md

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+# Docker Snippets
+
+## Stop All Containers
+
+```shell
+docker stop $(docker ps -q)
+```
+
+## Start Stopped Continaers
+
+```shell
+docker start $(docker ps -q -f "status=exited")
+```