feat : Github Secrets의 값을 끼워 넣어주는 step 추가

.github/workflows/cicd.yml

@@ -4,7 +4,7 @@ name: HappinesSQL CI/CD
 # 2. 워크플로가 시작될 조건 지정
 on:
   pull_request:
-    types: [closed]
+    types: [ closed ]
   workflow_dispatch:
 
 jobs:
@@ -27,6 +27,17 @@ jobs:
         run: chmod +x ./gradlew
         shell: bash # 권한 부여
 
+      - name: Set Environment
+        uses: microsoft/variable-substitution@v1
+        with:
+          files: ./src/main/resources/application.yml
+        env:
+          cloud.aws.credentials.access-key: ${{ secrets.AWS_S3_ACCESS_KEY }}
+          cloud.aws.credentials.secret-key: ${{ secrets.AWS_S3_SECRET_KEY }}
+          spring.datasource.url: ${{ secrets.DB_URL }}
+          spring.datasource.username: ${{ secrets.DB_USER }}
+          spring.datasource.password: ${{ secrets.DB_PASSWORD }}
+
       - name: Build with Gradle
         run: ./gradlew clean build -x test
         shell: bash # build 시작

src/main/resources/application.yml

@@ -8,7 +8,7 @@ spring:
   # JPA
   datasource:
     driver-class-name: com.mysql.cj.jdbc.Driver
-    url: ${DB_HOST}
+    url: ${DB_HOST} # TODO: 나중에 환경변수 DB_URL로 변경
     username: ${DB_USER}
     password: ${DB_PASSWORD}
   jpa: