CI/CD clarification

Author: stuartasiimwe7

README.md

@@ -77,8 +77,8 @@ curl -H "Authorization: Bearer $(cat token.txt)" "http://localhost:3000/aws-secu
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 ## CI / CD
-- CI: installs, lints, builds, and tests (with Postgres) on pull requests.
-- CD: optional ECR/ECS workflow.
+- **CI**: installs, lints, builds, and tests (with Postgres) on pull requests and pushes to main
+- **CD**: builds and pushes Docker images to GitHub Container Registry (GHCR) on releases
 
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 ## Features