Add action to build standalone docker images [#124]

Builds the standalone binary for both amd64 and arm64, and then builds a
multi-arch docker image and pushes it to the GitHub Container Registry.

.github/workflows/build-dockers.yml

@@ -6,9 +6,6 @@ on:
       - "**"
     tags:
       - "v*"
-  #pull_request:
-  #  branches:
-  #    - "**"
   workflow_dispatch:
 
 jobs:

.github/workflows/build-standalone.yml

@@ -0,0 +1,84 @@
+name: Build Standalone Docker Images
+
+on:
+  push:
+    branches:
+      - "**"
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+jobs:
+  build-standalone:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        GO_VERSION:
+          - 1.23.1
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.GO_VERSION }}
+
+      - name: APT Install
+        run: |
+          sudo dpkg --add-architecture arm64
+          sudo apt-get -y install build-essential debhelper fakeroot crossbuild-essential-arm64
+
+      - name: Build Debian packages
+        run: |
+          make debian
+          make debian-arm64
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/hakwerk/labca-standalone
+          annotations: |
+            org.opencontainers.image.description=Standalone version of LabCA GUI for use with other ACME servers
+            org.opencontainers.image.documentation=https://github.com/hakwerk/labca/blob/master/README_standalone.md
+            org.opencontainers.image.title=labca-standalone
+          labels: |
+            org.opencontainers.image.description=Standalone version of LabCA GUI for use with other ACME servers
+            org.opencontainers.image.documentation=https://github.com/hakwerk/labca/blob/master/README_standalone.md
+            org.opencontainers.image.title=labca-standalone
+          tags: |
+            type=schedule,pattern={{date 'YYYYMMDD'}}
+            type=match,pattern=v(.*),group=1
+            type=edge,enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
+            type=ref,event=branch,enable=${{ github.ref != format('refs/heads/{0}', github.event.repository.default_branch) }}
+            type=ref,event=pr
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.ACTION_PAT }}
+
+      - name: Build and push docker images
+        uses: docker/build-push-action@v6
+        with:
+          annotations: ${{ steps.meta.outputs.annotations }}
+          context: release
+          file: build/Dockerfile-standalone
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64/v8
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}

.github/workflows/release.yml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  build-standalone:
+  create-release:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false