docker-documentation.md

@@ -58,6 +58,6 @@ docker start <name|id>
 docker stop <name|id>
 docker ps [-a include stopped containers]
 docker rm <name|id> [rmi image delete, rm container delete]
-docker exec -it <container name> /bin/bash [enter the container with bash when it is running]
+docker exec -it *container id* /bin/bash [enter the container with bash when it is running]
 </code>
 </pre>
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