remove build argument from the pipeline (#34)

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()