chore: add workflow scripts

.github/workflows/api-gateway.yaml

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+name: API 게이트웨이 빌드 후 배포하기
+on:
+  push:
+    branches: [ 'main' ]
+    #paths:
+    #  - 'api-gateway/**' # API Gateway 모듈 변경
+
+env:
+  SPRING_PROFILE: prod
+  IMAGE_NAME: spinachpasta/api-gateway
+  MODULE_PATH: api-gateway
+  SERVER_PORT: 8080
+
+concurrency:
+  group: api
+
+jobs:
+  prepare-variables:
+    name: 환경변수 준비하기
+    runs-on: ubuntu-latest
+    outputs:
+      image-tag: ${{ steps.setup-env.outputs.image-tag }}
+      module-path: ${{ steps.setup-env.outputs.module-path }}
+      spring-profile: ${{ steps.setup-env.outputs.spring-profile }}
+      server-port: ${{ steps.setup-env.outputs.server-port }}
+      image-name: ${{ steps.setup-env.outputs.image-name }}
+    steps:
+      - name: GitHub 에서 레포 받아오기
+        uses: actions/checkout@v3
+
+      - name: 환경변수 출력하기
+        id: setup-env
+        run: |
+          echo "image-tag=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+          echo "module-path=$MODULE_PATH" >> $GITHUB_OUTPUT
+          echo "spring-profile=$SPRING_PROFILE" >> $GITHUB_OUTPUT
+          echo "server-port=$SERVER_PORT" >> $GITHUB_OUTPUT
+          echo "image-name=$IMAGE_NAME" >> $GITHUB_OUTPUT
+
+  call-build-workflow:
+    if: github.event_name == 'push'
+    needs: [ prepare-variables ]
+    name: 이미지 빌드 & 푸쉬
+    uses: ./.github/workflows/jib-build.yaml
+    permissions:
+      id-token: write
+      contents: read
+    with:
+      spring-profile: ${{ needs.prepare-variables.outputs.spring-profile }}
+      server-port: ${{ needs.prepare-variables.outputs.server-port }}
+      image-name: ${{ needs.prepare-variables.outputs.image-name }}
+      image-tag: ${{ needs.prepare-variables.outputs.image-tag }}
+      module-path: ${{ needs.prepare-variables.outputs.module-path }}
+    secrets:
+      DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+      DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}

.github/workflows/jib-build.yaml

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+name: 이미지 빌드 & 푸쉬
+on:
+  workflow_call:
+    inputs:
+      spring-profile:
+        required: true
+        type: string
+      server-port:
+        required: true
+        type: string
+      image-name:
+        required: true
+        type: string
+      image-tag:
+        required: true
+        type: string
+      module-path:
+        required: true
+        type: string
+    secrets:
+      DOCKERHUB_USERNAME:
+        required: true
+      DOCKERHUB_TOKEN:
+        required: true
+
+jobs:
+  build:
+    runs-on: [ ubuntu-latest ]
+    name: 이미지 빌드하기
+
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - name: GitHub 에서 레포 받아오기
+        uses: actions/checkout@v3
+
+      - name: 도커허브 로그인
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: JDK17 준비하기
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Gradle 준비하기
+        uses: gradle/gradle-build-action@v2
+
+      - name: 이미지 빌드하고 푸쉬하기
+        id: build-image
+        env:
+          SPRING_PROFILES_ACTIVE: ${{ inputs.spring-profile }}
+          IMAGE_NAME: ${{ inputs.image-name }}
+          IMAGE_TAG: ${{ inputs.image-tag }}
+          SERVER_PORT: ${{ inputs.server-port }}
+        run: |
+          cd ${{ inputs.module-path }} && \
+          chmod +x gradlew && ./gradlew jib