ci: use random host port to avoid conflict with existing services

.gitea/workflows/ci.yml

@@ -70,7 +70,7 @@ jobs:
           docker stop ci-test || true
           docker rm ci-test || true
           docker run -d --name ci-test \
-            --network host \
+            -p 0:80 \
             -e APP_ENV=ci \
             -e APP_VERSION=ci-${{ gitea.sha }} \
             -e BUILD_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
@@ -78,8 +78,9 @@ jobs:
             -e GIT_BRANCH=${{ gitea.ref_name }} \
             -e DEPLOY_TIME=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
             ci-image:latest
+          CI_PORT=$(docker port ci-test 80 | cut -d: -f2)
           for i in $(seq 1 12); do
-            if curl -sf http://localhost:80/health > /dev/null 2>&1; then
+            if curl -sf http://localhost:$CI_PORT/health > /dev/null 2>&1; then
               echo "::notice::Health check passed"
               docker logs ci-test 2>&1 || true
               docker stop ci-test