feat(docker): add LDK Node mint service with dedicated Docker setup (#1108)

* feat(docker): add LDK Node mint service with dedicated Docker setup

- Add Dockerfile.ldk-node and Dockerfile.ldk-node.arm for LDK Node builds
- Add GitHub Actions workflows for publishing LDK Node Docker images
- Add docker-compose.ldk-node.yaml for standalone LDK Node deployment
- Integrate LDK Node service into main docker-compose.yaml with profile
- Update cdk-mintd README with LDK Node Docker configuration

* feat: use docker tags

.github/workflows/docker-publish-ldk-node-arm.yml

@@ -0,0 +1,62 @@
+name: Publish Docker Image LDK Node ARM64
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to build and publish'
+        required: true
+        default: 'latest'
+
+env:
+  REGISTRY: docker.io
+  IMAGE_NAME: cashubtc/mintd
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=ldk-node-arm64,enable=${{ github.event_name == 'release' }}
+            type=semver,pattern={{version}}-ldk-node-arm64
+            type=semver,pattern={{major}}.{{minor}}-ldk-node-arm64
+            type=ref,event=branch,suffix=-ldk-node-arm64
+            type=ref,event=pr,suffix=-ldk-node-arm64
+            type=sha,suffix=-ldk-node-arm64
+            ${{ github.event.inputs.tag != '' && format('{0}-ldk-node-arm64', github.event.inputs.tag) || '' }}
+
+      # Build and push ARM64 image with architecture suffix
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/arm64
+          file: ./Dockerfile.ldk-node.arm
+          tags: ${{ steps.meta.outputs.tags }}-arm64
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/docker-publish-ldk-node.yml

@@ -0,0 +1,62 @@
+name: Publish Docker Image LDK Node AMD64
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to build and publish'
+        required: true
+        default: 'latest'
+
+env:
+  REGISTRY: docker.io
+  IMAGE_NAME: cashubtc/mintd
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=ldk-node,enable=${{ github.event_name == 'release' }}
+            type=semver,pattern={{version}}-ldk-node
+            type=semver,pattern={{major}}.{{minor}}-ldk-node
+            type=ref,event=branch,suffix=-ldk-node
+            type=ref,event=pr,suffix=-ldk-node
+            type=sha,suffix=-ldk-node
+            ${{ github.event.inputs.tag != '' && format('{0}-ldk-node', github.event.inputs.tag) || '' }}
+
+      # Build and push AMD64 image with architecture suffix
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile.ldk-node
+          push: true
+          platforms: linux/amd64
+          tags: ${{ steps.meta.outputs.tags }}-amd64
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max