diff --git a/copilot/pipelines/react-app-pipeline/buildspec.yml b/copilot/pipelines/react-app-pipeline/buildspec.yml
index ace9198..3f2973f 100644
--- a/copilot/pipelines/react-app-pipeline/buildspec.yml
+++ b/copilot/pipelines/react-app-pipeline/buildspec.yml
@@ -11,14 +11,12 @@ phases:
       # Download trivy. https://aquasecurity.github.io/trivy/v0.48/getting-started/installation/
       - echo "install trivy"
       - RELEASE_VERSION=$(grep -Po '(?<=VERSION_ID=")[0-9]' /etc/os-release)
-      - cat << 'EOF' | tee -a /etc/yum.repos.d/trivy.repo
-        [trivy]
+      - echo '[trivy]
         name=Trivy repository
         baseurl=https://aquasecurity.github.io/trivy-repo/rpm/releases/$RELEASE_VERSION/$basearch/
         gpgcheck=1
         enabled=1
-        gpgkey=https://aquasecurity.github.io/trivy-repo/rpm/public.key
-        EOF
+        gpgkey=https://aquasecurity.github.io/trivy-repo/rpm/public.key' | tee -a /etc/yum.repos.d/trivy.repo
       - yum -y update
       - yum -y install trivy
       - chmod +x trivy