[Deploy] 서브모듈 설정

[BAEK0111]

#️⃣연관된 이슈

#338

📝작업 내용

서브모듈 설정

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[Copilot]

Pull request overview

This PR restructures how environment-specific/private Spring configuration is provided to the application by introducing a Git submodule (ASSU_config) and a Gradle resource-copy step, while removing the previous application-secret.yml injection path from Docker/CI-CD.

Changes:

• Add ASSU_config Git submodule and automatically copy its environment configs into src/main/resources during processResources.
• Update CI/CD workflows to checkout submodules (and remove application-secret.yml creation/copy steps in CD).
• Update Spring/Docker Compose configuration by disabling spring.config.import for application-secret.yml and removing related container mounts/env settings.

Reviewed changes

Copilot reviewed 6 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/main/resources/application.yml	Adds profile grouping/defaults and comments out external secret config import.
docker-compose.yml	Removes application-secret.yml mount and SPRING_CONFIG_ADDITIONAL_LOCATION.
build.gradle	Adds copyPrivateConfig and makes processResources depend on it.
.gitmodules	Adds ASSU_config submodule definition.
.gitignore	Ignores generated/copied application-*.yml files.
.github/workflows/ci.yml	Enables submodule checkout using a secret token.
.github/workflows/cd.yml	Enables submodule checkout and removes application-secret.yml handling.

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