Define deployment scheme and staging environments

## Deployment Scheme: Containerized Environment
We advise deploying the mobile banking application in a containerized environment rather than
traditional bare metal or virtual machine (VM) setups. Containers offer several distinct advantages
that enhance the development, deployment, and operational efficiency of the application:
### Consistent Environments from Development to Production
Containers ensure that the environment in which the application runs remains consistent across
all stages of the development lifecycle—from the developer’s local machine to the integration test
environment and finally to production. This consistency reduces the risk of environment-specific
bugs and simplifies the troubleshooting process, leading to more reliable and predictable
deployments.
### Mature Orchestration Technologies
With containerization, mature orchestration technologies such as Kubernetes can be leveraged
to manage the deployment, scaling, and operations of the application containers. Kubernetes
automates many of the complex tasks associated with application deployment, such as load
balancing, scaling, and failover, thereby improving resilience and uptime.

### Tickets
- [x] #13
- [x] #14
- [ ] #15