ci: improve containers build caching

.github/workflows/actions/build-container/action.yml

@@ -4,8 +4,6 @@ description: Build and push a container
 inputs:
   target:
     required: true
-  images:
-    required: true
 
 runs:
   using: composite
@@ -13,12 +11,15 @@ runs:
     - uses: docker/metadata-action@v4
       id: meta
       with:
-        images: ${{ inputs.images }}
+        images: ${{ env.REGISTRY }}/${{ env.NAMESPACE }}/${{ inputs.target }}
 
     - uses: docker/build-push-action@v3
       with:
         context: .
-        push: ${{ startsWith(github.ref, 'refs/tags') }}
+        pull: true
+        push: ${{ github.event_name == 'push' }}
         target: ${{ inputs.target }}
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
+        cache-from: type=gha,scope=${{ inputs.target }}
+        cache-to: type=gha,scope=${{ inputs.target }},mode=max

.github/workflows/container.yml

@@ -17,43 +17,68 @@ jobs:
     env:
       REGISTRY: ghcr.io
       NAMESPACE: ${{ github.repository_owner }}
+      CACHE_REF: ghcr.io/${{ github.repository_owner }}/libretime-cache
 
     if: ${{ github.repository_owner == 'libretime' }}
     steps:
       - uses: actions/checkout@v3
 
+      - uses: docker/setup-buildx-action@v2
+
       - uses: docker/login-action@v2
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build libretime-analyzer
+      - name: Build python-builder
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          pull: true
+          target: python-builder
+          cache-from: type=gha,scope=python-builder
+          cache-to: type=gha,scope=python-builder,mode=max
+
+      - name: Build python-base
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          pull: true
+          target: python-base
+          cache-from: type=gha,scope=python-base
+          cache-to: type=gha,scope=python-base,mode=max
+
+      - name: Build python-base-ffmpeg
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          pull: true
+          target: python-base-ffmpeg
+          cache-from: type=gha,scope=python-base-ffmpeg
+          cache-to: type=gha,scope=python-base-ffmpeg,mode=max
+
+      - name: Build analyzer
         uses: ./.github/workflows/actions/build-container
         with:
           target: libretime-analyzer
-          images: ${{ env.REGISTRY }}/${{ env.NAMESPACE }}/libretime-analyzer
 
-      - name: Build libretime-api
+      - name: Build api
         uses: ./.github/workflows/actions/build-container
         with:
           target: libretime-api
-          images: ${{ env.REGISTRY }}/${{ env.NAMESPACE }}/libretime-api
 
-      - name: Build libretime-playout
+      - name: Build playout
         uses: ./.github/workflows/actions/build-container
         with:
           target: libretime-playout
-          images: ${{ env.REGISTRY }}/${{ env.NAMESPACE }}/libretime-playout
 
-      - name: Build libretime-worker
+      - name: Build worker
         uses: ./.github/workflows/actions/build-container
         with:
           target: libretime-worker
-          images: ${{ env.REGISTRY }}/${{ env.NAMESPACE }}/libretime-worker
 
-      - name: Build libretime-legacy
+      - name: Build legacy
         uses: ./.github/workflows/actions/build-container
         with:
           target: libretime-legacy
-          images: ${{ env.REGISTRY }}/${{ env.NAMESPACE }}/libretime-legacy