GRN2-XX: exclude master from alternate image build

.github/workflows/ci.build.push.yml

@@ -70,7 +70,7 @@ jobs:
 
       # Alternate Image with alpine
       - name: Alternate Alpine Build and Push
-        if: contains(env.DOCKER_BUILD_ENABLED, 'true') && contains(env.DOCKER_BUILD_ALTERNATE_ENABLED, 'true')
+        if: contains(env.DOCKER_BUILD_ENABLED, 'true') && contains(env.DOCKER_BUILD_ALTERNATE_ENABLED, 'true') && github.ref != 'refs/heads/master'
         uses: docker/build-push-action@v2
         with:
           file: dockerfiles/v2/alpine
@@ -83,7 +83,7 @@ jobs:
 
       # Alternate Images for bbb-bionic-230 with amazonlinux
       - name: Alternate Amazon Linux Build and Push
-        if: contains(env.DOCKER_BUILD_ENABLED, 'true') && contains(env.DOCKER_BUILD_ALTERNATE_ENABLED, 'true')
+        if: contains(env.DOCKER_BUILD_ENABLED, 'true') && contains(env.DOCKER_BUILD_ALTERNATE_ENABLED, 'true') && github.ref != 'refs/heads/master'
         uses: docker/build-push-action@v2
         with:
           file: dockerfiles/v2/amazonlinux

.github/workflows/ci.yml

@@ -10,7 +10,10 @@ env:
 name: CI
 on:
   push:
-    branches-ignore: "master"
+    branches-ignore:
+      - master
+      - v1
+      - v2
   pull_request:
     branches: "*"