update build script to use matrix versioning, using .github to support local act,

.forgejo/workflows/build.yaml

@@ -1,43 +0,0 @@
-name: Build And Publish Docker
-
-on:
-  push:
-    branches:
-      - "master"
-
-jobs:
-  build:
-    runs-on: debian-bookworm
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Install deps
-        run: curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh
-
-      - 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: Login to Self-Hosted Registry
-        uses: docker/login-action@v2
-        with:
-          registry: git.myco.systems
-          username: ${{ secrets.REGISTRY_USER }}
-          password: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
-
-      - name: Build and Push Extended Version
-        uses: docker/build-push-action@v4
-        with:
-          builder: ${{ steps.buildx.outputs.name }}
-          context: ./
-          file: ./Dockerfile
-          platforms: linux/amd64
-          push: true
-          tags: |
-            git.myco.systems/mycosystems/hugo-ci:latest