Standardize service names in Docker Compose for consistency

[Aravinda-HWK]

Description:

Currently, the service names in docker-compose.yml are inconsistent. For example:

• SMTP service container is named smtp-server-container
• Dovecot service container is named dovecot-server
• Ideally, SMTP should be named postfix to align with the application naming convention.

Problem:

• Inconsistent service names can cause confusion and reduce maintainability.
• Other files (scripts, configs, volumes) reference these service names, so changing them must be done carefully to avoid breaking functionality.

Proposed Solution:

1. Standardize all service names in docker-compose.yml to use the application name + -server suffix.

Example: smtp → postfix

2. Check all other files that reference these service names (scripts, configs, volumes) and update them accordingly.
3. Ensure all functionalities continue to work after renaming.

Additional Context:

• This is a maintenance and consistency improvement.
• No new features are added; only naming adjustments.