Clarify CI action, remove feature

.github/workflows/feature.yml

@@ -1,41 +0,0 @@
-# This is a basic workflow to help you get started with Actions
-
-name: Feature CI
-
-# Controls when the workflow will run
-on:
-  # Triggers the workflow on push or pull request events but only for the main branch
-  push:
-    branches-ignore: [ main ]
-
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
-jobs:
-  test_build:
-    name: Build  Docker image
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out the repo
-        uses: actions/checkout@v2
-          
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@master
-        with:
-          platforms: all
-
-      - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@master
-      
-      - name: Build the Docker image
-        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
-        with:
-          context: .
-          builder: ${{ steps.buildx.outputs.name }}
-          platforms: linux/amd64,linux/arm64,linux/arm/v7
-          push: false
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}