build on tag pushes (#54)

.github/workflows/build_push_ecr.yml

@@ -3,10 +3,14 @@
 name: Build and Push docker image to ECR
 
 on:
+  # push:
+  #   branches:
+  #     - main
+  # pull_request:
   push:
-    branches:
-      - main
-  pull_request:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+      - dev-latest
 
 concurrency:
   group: ${{ github.ref }}
@@ -38,11 +42,14 @@ jobs:
           ECR_REPOSITORY: ${{github.event.repository.name}}       # Naming convention: ECR registry name == GITHUB repo name
           MAIN_BRANCH: main                                       # Images from this branch will be tagged as "latest"
         run: |
+          #! Due to we trigger on push.tags GITHUB_REF - is the tag name
+          GIT_TAG="${GITHUB_REF}"
+
           IMAGE_TAG="${GITHUB_SHA:0:8}"
-          EXTRA_IMAGE_TAGS="dev-latest"
+          EXTRA_IMAGE_TAGS=$GIT_TAG
 
-          #! Add latest tag only if on MAIN_BRANCH branch
-          if [[ ${GITHUB_REF} == "refs/heads/${MAIN_BRANCH}" ]]; then
+          #! Add latest tag only if on named releases tag='v*'
+          if [[ ${GIT_TAG} == v* ]]; then
             EXTRA_IMAGE_TAGS="${EXTRA_IMAGE_TAGS};latest"
           fi