Remove build-base stage

Doesn't actually save us much time. Reduce some complexity.

.github/workflows/docker-publish.yaml

@@ -10,45 +10,8 @@ env:
   PUSH_IMAGE: ${{ (github.ref_name == 'master') || (github.repository_owner != 'moos-ivp') }}
 
 jobs:
-  build-base:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: ubuntu-latest
-            arch: linux/amd64
-          - os: ubuntu-latest # change this to the native arm runner when Github makes it public
-            arch: linux/arm64
-    steps:
-      - name: Prepare
-        run: |
-          platform=${{ matrix.arch }}
-          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
-          echo "COMMIT_TIMESTAMP=$(git log -1 --pretty=%ct)" >> $GITHUB_ENV
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build base by digest for cache
-        id: build
-        uses: docker/build-push-action@v6
-        env:
-          SOURCE_DATE_EPOCH: ${{ env.COMMIT_TIMESTAMP }}
-        with:
-          platforms: ${{ matrix.platform }}
-          file: docker/moos-ivp/Dockerfile
-          target: base
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-
   build-minrobot:
     runs-on: ubuntu-latest
-    needs: 
-      - build-base
     env:
       FLAVOR: ""
     steps: