enhanced docker image builds

.github/workflows/publish-edge-docker-images.yaml

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+name: Publish Edge Docker Images
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'backend/**'
+
+concurrency:
+  group: "edge-docker-images"
+  cancel-in-progress: false
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  backend-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    env:
+      IMAGE_NAME: jt-foss/backend
+    # Set default working directory
+    defaults:
+      run:
+        working-directory: ./backend  # Change the working directory to /backend
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha
+            type=edge
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: ./backend
+          file: ./backend/docker/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/publish-prod-docker-images.yaml

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+name: Publish Production Docker Images
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+    paths:
+      - 'backend/**'
+
+concurrency:
+  group: "prod-docker-images"
+  cancel-in-progress: false
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: jt-foss/backend
+
+jobs:
+  backend-image:
+    if: github.event_name == 'create' && github.event.ref_type == 'tag'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    env:
+      IMAGE_NAME: jt-foss/backend
+    # Set default working directory
+    defaults:
+      run:
+        working-directory: ./backend  # Change the working directory to /backend
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: ./backend
+          file: ./backend/docker/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}