ci: Set up the local showcase server

Author: lqiu96

.github/workflows/dependency_compatibility_test.yaml

@@ -12,20 +12,36 @@ jobs:
   dependency-compatibility-test:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout repository
+      - name: Checkout sdk-platform-java
         uses: actions/checkout@v4
       - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           java-version: '21'
           distribution: 'temurin'
           cache: maven
+      # Set up the for the CI
       - name: Install sdk-platform-java's modules
         # gapic-generator-java requires Java 8 and is irrelevant for this CI
         run: mvn -q -B -ntp install --projects '!gapic-generator-java' -Dcheckstyle.skip -Dfmt.skip -DskipTests -Dclirr.skip -T 1C
+
       # Run in the root module which should test for everything barring showcase
       - name: Perform Dependency Compatibility Testing
         run: ./.github/scripts/test_dependency_compatibility.sh dependencies.txt
+
+      # Set up local showcase server
+      - name: Parse showcase version
+        working-directory: java-showcase/gapic-showcase
+        run: echo "SHOWCASE_VERSION=$(mvn help:evaluate -Dexpression=gapic-showcase.version -q -DforceStdout)" >> "$GITHUB_ENV"
+      - name: Install showcase server
+        run: |
+          sudo mkdir -p /usr/src/showcase
+          sudo chown -R ${USER} /usr/src/
+          curl --location https://github.com/googleapis/gapic-showcase/releases/download/v${{env.SHOWCASE_VERSION}}/gapic-showcase-${{env.SHOWCASE_VERSION}}-linux-amd64.tar.gz --output /usr/src/showcase/showcase-${{env.SHOWCASE_VERSION}}-linux-amd64.tar.gz
+          cd /usr/src/showcase/
+          tar -xf showcase-*
+          ./gapic-showcase run &
+          cd -
       # Run for the Showcase tests
       - name: Perform Dependency Compatibility Testing (Showcase)
         run: ../.github/scripts/test_dependency_compatibility.sh dependencies.txt