Add email-api to Gitea build workflow

The email-api service was missing from the CI/CD build pipeline. Added:
- EMAIL_API_IMAGE environment variable
- Build step for email-api Dockerfile
- Push step for email-api image to registry

This ensures email-api images are built and pushed alongside other services
during the staging build workflow.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -11,6 +11,7 @@ env:
   API_IMAGE: apps/myai-api
   CV_MATCHER_API_IMAGE: apps/myai-cv-matcher-api
   RAG_API_IMAGE: apps/myai-rag-api
+  EMAIL_API_IMAGE: apps/myai-email-api
   WEB_IMAGE: apps/myai-web
   CV_CLEANUP_JOB_IMAGE: apps/myai-cv-cleanup-job
   CV_SEARCH_JOB_IMAGE: apps/myai-cv-search-job
@@ -45,6 +46,10 @@ jobs:
         run: |
           docker build -f Apis/rag-api/Dockerfile -t "${REGISTRY_HOST}/${RAG_API_IMAGE}:${IMAGE_TAG}" .
 
+      - name: Build Email API image
+        run: |
+          docker build -f Apis/email-api/Dockerfile -t "${REGISTRY_HOST}/${EMAIL_API_IMAGE}:${IMAGE_TAG}" .
+
       - name: Build Web image
         run: |
           docker build -f web/Dockerfile -t "${REGISTRY_HOST}/${WEB_IMAGE}:${IMAGE_TAG}" .
@@ -69,6 +74,10 @@ jobs:
         run: |
           docker push "${REGISTRY_HOST}/${RAG_API_IMAGE}:${IMAGE_TAG}"
 
+      - name: Push Email API image
+        run: |
+          docker push "${REGISTRY_HOST}/${EMAIL_API_IMAGE}:${IMAGE_TAG}"
+
       - name: Push Web image
         run: |
           docker push "${REGISTRY_HOST}/${WEB_IMAGE}:${IMAGE_TAG}"