Serve static content on Nginx instead of Vite

[turnerrainer]

AS AN Architect
I WANT all static content to be served by Nginx instead of Vite
SO THAT only read-only permissions could be assigned to files-serving server

Acceptance Criteria

• Nginx is used by default to serve all static files

Nginx is used througout all environments by Bürokratt's instances

• Vite is used only for local development to support faster development
• The server serving static files need only read-only permissions
• Validate the full functionality after the changes

DSL

• Dockerfile to only use Nginx
• Dockerfile.dev to use Vite by developers in their local environment (personal PC, etc.)

Scope

Dockerfiles

• Dockerfiles to serve all of Chat Widget's static files via Nginx and Vite Chat-Widget#183
• Dockerfiles to serve all of Backoffice's static files via Nginx and Vite #614
• Dockerfiles to serve all of Training Module's static files via Nginx and Vite Training-Module#501
• Dockerfiles to serve all of Service Module's static files via Nginx and Vite Service-Module#289
• Dockerfiles to serve all of Analytic Module's static files via Nginx and Vite Analytics-Module#236

Remove vulnerabilities

• Apply medium and low priority vulnerability fixes on NoOps NoOps#156