Add Coolify Testing Host workflow

.github/workflows/coolify-testing-host.yml

@@ -0,0 +1,84 @@
+name: Coolify Testing Host (v4-non-prod)
+
+on:
+  push:
+    branches: [ "main", "next" ]
+    paths:
+      - .github/workflows/coolify-testing-host.yml
+      - docker/testing-host/Dockerfile
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: "coollabsio/coolify-testing-host"
+
+jobs:
+  amd64:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: Login to ghcr.io
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN  }}
+      - name: Build image and push to registry
+        uses: docker/build-push-action@v3
+        with:
+          no-cache: true
+          context: .
+          file: docker/testing-host/Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+  aarch64:
+    runs-on: [ self-hosted, arm64 ]
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: Login to ghcr.io
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN  }}
+      - name: Build image and push to registry
+        uses: docker/build-push-action@v3
+        with:
+          no-cache: true
+          context: .
+          file: docker/testing-host/Dockerfile
+          platforms: linux/aarch64
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest-aarch64
+  merge-manifest:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    needs: [ amd64, aarch64 ]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to ghcr.io
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN  }}
+      - name: Create & publish manifest
+        run: |
+          docker buildx imagetools create --append ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest-aarch64 --tag ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+      - uses: sarisia/actions-status-discord@v1
+        if: always()
+        with:
+          webhook: ${{ secrets.DISCORD_WEBHOOK_DEV_RELEASE_CHANNEL  }}