feat: ci/cd

[dmironenko]

No description provided.

[Copilot]

Pull Request Overview

Adds CI/CD support and refactors configuration handling to use explicit config file paths. Key changes include shifting from directory-based config discovery to direct file path usage with a new CLI flag, restructuring containerization (new Dockerfile location and compose file), and adding a CD workflow to build and push images.

• Introduces flag-based configuration loading and changes default config path semantics.
• Replaces old Docker setup with a new multi-stage build and compose layout; adds GitHub Actions CD workflow.
• Adjusts runtime config file name and port configuration.

Reviewed Changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
internal/app/options.go	Adds flag parsing and changes default config file path.
internal/app/config.go	Switches to SetConfigFile, altering expected semantics of the path.
internal/app/app.go	Integrates flag-loading into app initialization.
configs/vixarapi.yaml	Changes port value format.
build/image/Dockerfile	New build image; alters build strategy and runtime environment.
build/compose.yaml	New compose file referencing new image build context and config path.
build/deps.go	Adds tool dependency tracking via build tag.
Makefile	Points DOCKER_COMPOSE_PATH to new compose file.
.github/workflows/cd.yaml	Adds CD pipeline for image build and push.
.env.dev	Updates CONFIG_PATH to a specific file path.
docker/Dockerfile	Removes old Docker build setup.
docker-compose.yaml	Removes old compose setup.

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