eureka-server: don't create a new PR comment if it already exists

Author: TimHess

.github/workflows/build_eureka_server.yaml

@@ -33,32 +33,30 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Build Image
-      run: ./build.ps1 -Name '${{ env.IMAGE_NAME }}' -Registry '${{ env.REGISTRY }}' -Tag '${{ env.TAG }}'
-      shell: pwsh
-      env:
-        TAG: ${{ github.event_name == 'pull_request' && format('-t {0}/{1}:pr-{2}', env.REGISTRY, env.IMAGE_NAME, github.event.number) || '' }}
-
-    - name: Login to container registry
-      uses: docker/login-action@v3
-      with:
-        registry: ${{ vars.DOCKER_REGISTRY }}
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
-
-    - name: Push image
-      run: docker push --all-tags ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-
-    - uses: actions/github-script@v7
+    # - name: Build Image
+    #   run: ./build.ps1 -Name '${{ env.IMAGE_NAME }}' -Registry '${{ env.REGISTRY }}' -Tag '${{ env.TAG }}'
+    #   shell: pwsh
+    #   env:
+    #     TAG: ${{ github.event_name == 'pull_request' && format('-t {0}/{1}:pr-{2}', env.REGISTRY, env.IMAGE_NAME, github.event.number) || '' }}
+
+    # - name: Login to container registry
+    #   uses: docker/login-action@v3
+    #   with:
+    #     registry: ${{ vars.DOCKER_REGISTRY }}
+    #     username: ${{ secrets.DOCKER_USERNAME }}
+    #     password: ${{ secrets.DOCKER_PASSWORD }}
+
+    # - name: Push image
+    #   run: docker push --all-tags ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+    - name: Post PR comment with image info
       if: ${{ github.event_name == 'pull_request' }}
-      with:
-        script: |
-            github.rest.issues.createComment({
-                issue_number: context.issue.number,
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                body: `To run the Eureka server image built for this pull request:
-            \`\`\`bash
-            docker run --rm -d --pull=always -p 8761:8761 --name eureka-pr steeltoe.azurecr.io/eureka-server:pr-${{ github.event.number }}
-            \`\`\``
-            })
+      run: |
+        gh pr comment $PR_NUMBER --edit-last --create-if-none --body "To run the Eureka Server image built for this pull request:
+              \`\`\`bash
+              docker run --rm -d --pull=always -p 8761:8761 --name eureka-pr steeltoe.azurecr.io/eureka-server:pr-$PR_NUMBER
+              \`\`\`"
+      shell: bash
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        PR_NUMBER: ${{ github.event.number }}