chore: adding test step

.github/workflows/docker-image.yml

@@ -6,22 +6,43 @@ on:
   pull_request:
     branches: ["master"]
 
+env:
+  TEST_TAG: axelpavageau/nginx-blue:test
+  LATEST_TAG: axelpavageau/nginx-blue:latest
+
 jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and export to Docker
+        uses: docker/build-push-action@v6
+        with:
+          load: true
+          tags: ${{ env.TEST_TAG }}
+
+      - name: Test
+        run: |
+          docker run -d --name test-container ${{ env.TEST_TAG }}
+          docker ps -a
+          docker exec test-container curl localhost
+          docker stop test-container
+          docker rm test-container
+
       - name: Build and push
         uses: docker/build-push-action@v6
         with:
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: axelpavageau/nginx-blue:latest
+          tags: ${{ env.LATEST_TAG }}