fix(compose): No need for cpp extension

Author: gounthar

docker-compose.yaml

@@ -286,7 +286,7 @@ services:
     image: ${IMAGE_PREFIX}/${GHCR_USERNAME}/quickstart-tutorials/jenkinsci-tutorials:cpp_${BRANCH_SUFFIX}
     environment:
       - GITPOD_WORKSPACE_URL=${GITPOD_WORKSPACE_URL}
-    container_name: desktop-jenkins_agent-1-cpp
+    container_name: desktop-jenkins_agent-1
     profiles:
       - cpp
     depends_on: