docs: Added instructions for installing new Keep from scratch in dock…

…er (#3105)

Co-authored-by: Tal <[email protected]>

docs/deployment/docker.mdx

@@ -29,3 +29,36 @@ The docker-compose.yml contains 3 services:
 - [keep-backend](https://console.cloud.google.com/artifacts/docker/keephq/us-central1/keep/keep-api?project=keephq) - a fastapi service that as the API server.
 - [keep-frontend](https://console.cloud.google.com/artifacts/docker/keephq/us-central1/keep/keep-ui?project=keephq) - a nextjs app that serves as Keep UI interface.
 - [keep-websocket-server](https://docs.soketi.app/getting-started/installation/docker) - Soketi (a pusher compatible websocket server) for real time alerting.
+
+### Reinstall Keep with the option to refresh from scratch
+`Caution:` This usage context will refresh from the beginning and Keep's data and settings will be erased
+
+For cases where you need to test many different options or simply want to reinstall Keep from scratch using docker compose without spending a lot of time, that is, without repeating the steps of installing docker, downloading the installer.. .. run the commands according to the previous instructions.
+
+Follow these steps
+
+#### Step1: Stop, Clear container, network, volume, image.
+In the directory containing the docker compose file you downloaded, say `/root/`
+
+```
+docker-compose down
+
+docker-compose down --rmi all
+
+docker-compose down -v
+
+docker system prune -a --volumes
+```
+
+#### Step2: Clear Config db, config file in state folder. 
+
+```
+rm -rf state/*
+``
+
+#### Step 3: Run again
+
+```
+docker compose up -d
+```
+