Update image naming to openchoreo-ui:local for local builds

- Update build-image script to tag as openchoreo-ui:local (matches openchoreo make/kind.mk expectations)
- Add --load flag for local Docker daemon loading
- Remove --platform flag (single-platform for local dev, multi-platform in CI)
- Fix CI workflow to push to ghcr.io/openchoreo/openchoreo-ui (not backstage-plugins)

This enables seamless integration with openchoreo repository:
- Local builds: yarn build-image creates openchoreo-ui:local
- CI builds: Pushes to ghcr.io/openchoreo/openchoreo-ui:latest-dev
- Versioned releases: Tags with version number

Author: kaviththiranga

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: openchoreo/backstage-plugins
+  IMAGE_NAME: openchoreo/openchoreo-ui
 
 # Avoid running multiple builds for the same commit
 concurrency:

packages/backend/package.json

@@ -13,7 +13,7 @@
     "lint": "backstage-cli package lint",
     "test": "backstage-cli package test",
     "clean": "backstage-cli package clean",
-    "build-image": "docker buildx build ../.. -f Dockerfile --platform linux/arm64,linux/amd64 --tag backstage"
+    "build-image": "docker buildx build ../.. -f Dockerfile --tag openchoreo-ui:local --load"
   },
   "dependencies": {
     "@backstage/backend-defaults": "^0.12.1",