Setup Dependabot & clean up build workflow (#5)

* Update actions

* Setup Dependabot

* Use linux arm64 runner

* Update dependabot to bother less

Author: TheRealPear

.github/dependabot.yml

@@ -0,0 +1,16 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/build.yml

@@ -1,76 +1,59 @@
-name: build
+name: Build
 
 on:
   workflow_dispatch:
   push:
     branches:
       - "**"
+    paths-ignore:
+        - 'README.md'
 
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
-  build-x86:
-    runs-on: ubuntu-latest
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            arch: amd64
+            platform: linux/amd64
+          - os: ubuntu-24.04-arm
+            arch: arm64
+            platform: linux/arm64
     permissions:
       contents: read
       packages: write
     steps:
-    - uses: actions/checkout@v3
+    - name: Prepare
+      run: |
+        platform=${{ matrix.platform }}
+        echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+    - uses: actions/checkout@v4
     - name: Log in to the Container registry
-      uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+      uses: docker/login-action@v3
       with:
         registry: ${{ env.REGISTRY }}
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
-
     - name: Extract metadata (tags, labels) for Docker
       id: meta
-      uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+      uses: docker/metadata-action@v5
       with:
         images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-
-    - name: Build and push Docker image
-      uses: docker/build-push-action@v4
-      with:
-        context: .
-        platforms: linux/amd64
-        push: true
-        tags: ${{ steps.meta.outputs.tags }}
-        labels: ${{ steps.meta.outputs.labels }}
-
-  build-arm:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-    steps:
-    - uses: actions/checkout@v3
-    - name: Log in to the Container registry
-      uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
-      with:
-        registry: ${{ env.REGISTRY }}
-        username: ${{ github.actor }}
-        password: ${{ secrets.GITHUB_TOKEN }}
-    - name: Set up QEMU
-      uses: docker/setup-qemu-action@v3
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
-
-    - name: Extract metadata (tags, labels) for Docker
-      id: meta
-      uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
-      with:
-        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-
+      uses: docker/setup-buildx-action@v3
     - name: Build and push Docker image
-      uses: docker/build-push-action@v4
+      uses: docker/build-push-action@v6
       with:
         context: .
-        platforms: linux/arm64
+        platforms: ${{ matrix.platform }}
         push: true
-        tags: ${{ steps.meta.outputs.tags }}-arm64
-        labels: ${{ steps.meta.outputs.labels }}-arm64
+        tags: ${{ steps.meta.outputs.tags }}-${{ env.PLATFORM_PAIR }}
+        labels: ${{ steps.meta.outputs.labels }}-${{ env.PLATFORM_PAIR }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max