Improve docker building workflow

.github/workflows/docker-build.yml

@@ -7,51 +7,34 @@ on:
   workflow_dispatch:
 
 jobs:
-  push-docker-image:
+  test-docker-image:
     # Ubuntu-20.04 required until this is fixed: https://github.com/actions/runner-images/discussions/9074
     runs-on: ubuntu-20.04
     steps:
-      - name: 'Checkout GitHub Action'
-        uses: actions/checkout@v4.1.1
-
-      - name: 'Login to GitHub Container Registry'
-        uses: docker/login-action@v3.0.0
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Checkout GitHub Action
+        uses: actions/checkout@v4.1.5
 
-      - name: 'Generate downcase repository name'
-        run: |
-          echo "REPO=${GITHUB_REPOSITORY,,}" >> ${GITHUB_ENV}
-
-      - name: 'Set up Docker Buildx'
-        uses: docker/setup-buildx-action@v3.1.0
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3.3.0
 
-      - name: 'Cache Docker layers'
-        uses: actions/cache@v4.0.1
+      - name: Build amd64 image for testing
+        uses: docker/build-push-action@v5.3.0
         with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-
-
-      - name: 'Build image for testing'
-        uses: docker/build-push-action@v5.1.0
-        with:
-          tags: ghcr.io/${{ env.REPO }}:test
+          context: .
+          tags: birdnet-go:test
           load: true
-          cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache-new
+          platforms: linux/amd64
+          cache-from: type=gha,scope=linux/amd64
+          cache-to: type=gha,mode=max,scope=linux/amd64
 
-      - name: 'Install alsa dummy module for testing built image'
+      - name: Install alsa dummy module for testing built image
         run: |
           sudo apt-get install linux-modules-extra-$(uname -r)
           sudo modprobe snd-dummy
 
-      - name: 'Test built image'
+      - name: Test built amd64 image
         run: |
-          docker run --rm -p 8080:8080 --device /dev/snd --env ALSA_CARD=0 ghcr.io/${{ env.REPO }}:test realtime --source "Dummy" & p1=$!
+          docker run --rm -p 8080:8080 --device /dev/snd --env ALSA_CARD=0 birdnet-go:test realtime --source "Dummy" & p1=$!
           if ! wget --retry-connrefused --waitretry=1 --tries=5 -q -O /dev/null http://localhost:8080; then
             echo "Failed to reach container after 5 sec"
             kill "$p1"
@@ -61,13 +44,40 @@ jobs:
             kill "$p1"
           fi
 
-      - name: 'Build and push images for all platforms'
-        uses: docker/build-push-action@v5.1.0
+  push-docker-image:
+    needs: test-docker-image
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        include:
+          - platform: linux/arm64
+          - platform: linux/amd64
+    steps:
+      - name: Checkout GitHub Action
+        uses: actions/checkout@v4.1.5
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3.1.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Generate downcase repository name
+        run: |
+          echo "REPO=${GITHUB_REPOSITORY,,}" >> ${GITHUB_ENV}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3.3.0
+
+      - name: Build and push docker image
+        uses: docker/build-push-action@v5.3.0
         with:
+          context: .
           push: true
           tags: |
             ghcr.io/${{ env.REPO }}:dev
             ghcr.io/${{ env.REPO }}:${{ github.sha }}
-          platforms: linux/amd64,linux/arm64
-          cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache-new
+          platforms: ${{ matrix.platform }}
+          cache-from: type=gha,scope=${{ matrix.platform }}
+          cache-to: type=gha,mode=max,scope=${{ matrix.platform }}