Master/move docker cache to flashmini cache

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

@@ -7,13 +7,29 @@ inputs:
   tag:
     description: 'Tag suffix for the image'
     required: true
+  image-subdir:
+    description: 'Subdirectory to push image to'
+    default: 'cache'
+
+outputs:
+  container-image-adress: 
+    description: Address of container image
+    value: ${{ steps.set-image.outputs.image }}
 
 runs:
   using: "composite"
   steps:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
 
+    - name: Set image names
+      id: set-image
+      shell: bash
+      run: |
+        image="ghcr.io/${{ github.repository }}/${{ inputs.image-subdir }}:${{ inputs.tag }}"
+        echo "image=$image" >> $GITHUB_OUTPUT
+        echo "cache_image=${image}-cache" >> $GITHUB_OUTPUT
+
     - name: Log in to the Container registry
       uses: docker/login-action@v3
       with:
@@ -27,6 +43,6 @@ runs:
         context: .
         file: ${{ inputs.dockerfile }}
         push: true
-        tags: ghcr.io/${{ github.repository }}:${{ inputs.tag }}
-        cache-from: type=registry,ref=ghcr.io/${{ github.repository }}:${{ inputs.tag }}-cache
-        cache-to: type=registry,ref=ghcr.io/${{ github.repository }}:${{ inputs.tag }}-cache,mode=max
+        tags: ${{ steps.set-image.outputs.image }}
+        cache-from: type=registry,ref=${{ steps.set-image.outputs.cache_image }}
+        cache-to: type=registry,ref=${{ steps.set-image.outputs.cache_image }},mode=max

.github/workflows/build-test.yml

@@ -3,7 +3,6 @@ name: Build & Test
 on:
   push: { branches: ["master", "_master/add_ci"] }
   pull_request: { branches: ["master"] }
-  workflow_dispatch:
 
 permissions: { contents: read, packages: write }
 

.github/workflows/linux-pipeline.yml

@@ -21,20 +21,23 @@ jobs:
   prepare:
     name: Build Container (${{ inputs.backend }})
     runs-on: ubuntu-latest
+    outputs:
+      container-image-adress: ${{ steps.build.outputs.container-image-adress }}
     steps:
       - uses: actions/checkout@v4
-      - name: Build & Push
+      - id: build
+        name: Build & Push
         uses: ./.github/actions/build-container
         with:
           dockerfile: ci/docker/linux/Dockerfile.${{ inputs.backend }}
-          tag: linux-${{ inputs.backend }}
+          tag: linux-${{ inputs.backend }}-container
 
   build:
     name: Linux (${{ inputs.compiler }}-${{ inputs.backend }})
     needs: prepare
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/${{ github.repository }}:linux-${{ inputs.backend }}
+      image: ${{ needs.prepare.outputs.container-image-adress }}
       credentials:
         username: ${{ github.actor }}
         password: ${{ github.token }}