* Updated README.md

* Squash merge feature/update-docker-image into master

* Install vim on the openmessaging image

* Start shell by default

* Start shell by default also for Dockerfile.build

* Use eclipse-temurin:17, fix apt install, and document image tagging\n\n- Switch base images to eclipse-temurin:17 for best practice\n- Remove version pinning for vim/tzdata to avoid apt errors\n- Update README to show -t usage and new image names\n- Prevent dangling images by tagging in build commands