DevOps - v2 to v3 migration docs

! PRE-RELEASE DEMO DOCUMENTATION !

GitLab Configurator Updates:

File: global/config.yaml
Paste the code below into the position indicated on the screen:

operations: gitlab.tunex.io:5050/marionette-develop/core/operations:latest
balances: gitlab.tunex.io:5050/marionette-develop/core/balances:latest
trading:
  enabled: true
  image: gitlab.tunex.io:5050/marionette-develop/core/trading:latest
  separate_trading_user_account: false
  default_market: "ETH-USDT"

Docker Compose Templates:

Two files in the templates/compose folder need to be replaced to include the new images listed above. Note that one image is hardcoded in the back-end.

Action Required:

Download the updated files and replace the existing ones in the templates/compose folder.

Server Migration:

This release introduces a new database, ClickHouse. To ensure a successful migration, follow the steps below for the initial setup.

Migration Process:

Step 1: Start the migration. Allow the accounting container to migrate with the db-bridge. Wait approximately 30 minutes before proceeding.
Run the following commands:

Bring down the current setup:
```
docker-compose down
```
Start the required services:
```
docker-compose up -d nats db clickhouse
```

Start the db-bridge container and monitor the logs:

docker-compose up -d db-bridge && docker-compose logs -f db-bridge

Start the accounting container:
```
docker-compose up -d accounting
```

If the migration fails:
Run this command to remove all ClickHouse data and retry:

docker-compose rm -fs accounting clickhouse && rm -rf data/clickhouse_* && docker-compose up -d clickhouse && docker-compose up -d accounting

Step 2: Verify the migration for the balances container. Ensure there are no errors in the logs.
Run the following commands:

docker-compose up -d balances
docker-compose logs -f balances

Step 3: If everything is functioning correctly, start all containers:

docker-compose up -d