Rework GitHub actions (#63)

.github/workflows/build.yaml

@@ -1,20 +1,71 @@
 name: Build
 
 on:
+  schedule:
+    - cron: '45 9 * * 1-4'
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - Dockerfile
+      - rootfs/**
   pull_request:
     branches:
       - main
 
 jobs:
+  init:
+    name: Init image build
+    runs-on: ubuntu-latest
+    if: ${{ github.repository_owner == 'home-assistant' }}
+    outputs:
+      target: ${{ steps.target.outputs.version }}
+      tag: ${{ steps.version.outputs.string }}
+      new_image: ${{ github.event_name == 'pull_request' || steps.existing_image.outcome == 'failure' }}
+    steps:
+      - uses: actions/[email protected]
+
+      - name: Target version
+        id: target
+        run: |
+          echo "version=$(curl -sSL https://version.home-assistant.io/beta.json | jq -r '.homeassistant.default')" >> $GITHUB_OUTPUT
+
+      - name: Set version string
+        id: version
+        run: |
+          echo "string=${{ steps.target.outputs.version }}-$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+
+      - name: Check if image exist
+        id: existing_image
+        if: ${{ github.event_name != 'pull_request' }}
+        continue-on-error: true
+        run: |
+          docker pull ghcr.io/${{ github.repository_owner }}/private-demo:${{ steps.version.outputs.string }}
+
   build:
     name: Build image
     runs-on: ubuntu-latest
+    needs:
+      - "init"
+    if: ${{ needs.init.outputs.new_image }}
+    environment: ${{ github.event_name != 'pull_request' && 'build' || '' }}
     steps:
       - uses: actions/[email protected]
 
+      - name: Login to GitHub Container Registry
+        uses: docker/[email protected]
+        if: ${{ github.event_name != 'pull_request' }}
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Build
         uses: docker/[email protected]
         with:
           context: .
-          push: false
-          tags: "ghcr.io/${{ github.repository_owner }}/private-demo:pr-${{ github.event.number }}"
+          push: ${{ github.event_name != 'pull_request' }}
+          build-args: |
+            TARGET_VERSION=${{ needs.init.outputs.target }}
+          tags: "ghcr.io/${{ github.repository_owner }}/private-demo:${{ needs.init.outputs.tag }}"

Dockerfile

@@ -1,2 +1,3 @@
-FROM ghcr.io/home-assistant/home-assistant:2024.8.0b7
+ARG TARGET_VERSION=stable
+FROM ghcr.io/home-assistant/home-assistant:$TARGET_VERSION
 COPY rootfs /