Start working to build up our custom images

.github/workflows/build.yml

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+name: Build Images
+
+on:
+  push:
+
+env:
+  REGISTRY: ghcr.io
+
+concurrency:
+  group: "${{ github.event_name}}-${{ github.ref }}"
+  cancel-in-progress: true
+
+jobs:
+  build-images:
+    name: "Build Docker image"
+    runs-on: ubuntu-20.04
+    permissions:
+      contents: read
+      packages: write
+    environment: ${{ startsWith(github.ref, 'refs/tags/') && 'Release' || 'Development' }}
+
+    strategy:
+      matrix:
+        image:
+          - path: java/eclipse-temurin
+            file: alpine.Dockerfile
+            arg: JAVA_VERSION=8
+            image: |
+              pufferpanel/eclipse-temurin:8-alpine
+              pufferpanel/eclipse-temurin:8
+
+    env:
+      REGISTRY_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
+      REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
+
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
+
+      - name: Login to DockerHub
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+        with:
+          username: ${{ env.REGISTRY_USERNAME }}
+          password: ${{ env.REGISTRY_PASSWORD }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
+        with:
+          images: |
+            ${{ matrix.image.image }}
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v3
+
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
+        with:
+          context: ${{ matrix.image.path }}
+          file: ${{ matrix.image.file }}
+          push: ${{ github.event_name != 'pull_request' && env.REGISTRY_USERNAME != '' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          build-args: |
+            ${{ matrix.image.arg }}
+          platforms: linux/amd64,linux/arm64

java/eclipse-temurin/alpine.Dockerfile

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+ARG JAVA_VERSION
+FROM eclipse-temurin:${JAVA_VERSION}-alpine
+
+RUN apk add git