remove build argument from the pipeline

remove build argument of the base image from the pipeline, so that it will be managed from withing the Dcoekrfile as in other places

Author: Leonid Podolinskiy

.github/workflows/init_container.yaml

@@ -40,8 +40,6 @@ jobs:
           ]
     runs-on: ubuntu-latest
     name: Build and push Docker image
-    env:
-      base_image_tag: alpine-3.20.0
     steps:
       - name: Set release tag
         shell: bash
@@ -121,7 +119,6 @@ jobs:
           tags: ${{steps.set_docker_tags.outputs.DOCKER_TAGS}}
           build-args: |
             FILE=${{ matrix.agents.file }}
-            base_image_tag=${{ env.base_image_tag }}
 
       - name: Slack Notification
         if: always()