Merge #2506

2506: Finishing touches for fixing arm builds r=mergify[bot] a=Diman0

- Use self-hosted runners for arm base image
- Use seperate docker image cache for arm build

## What type of PR?

fix

## What does this PR do?

### Related issue(s)
n/a

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [n/a] In case of feature or enhancement: documentation updated accordingly
- [n/a] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Dimitri Huisman <diman@huisman.xyz>

.github/workflows/build_test_deploy.yml

@@ -89,9 +89,10 @@ jobs:
         run: |
           echo ${{ steps.targets.outputs.matrix }}
 
-## This job buils the base image. The base image is used by all other images.
-  build-base-image:
+## This job builds the base image. The base image is used by all other images.
+  build-base-image-x64:
     name: Build base image
+    if: inputs.architecture == 'linux/amd64'
     needs:
       - targets
     runs-on: ubuntu-latest
@@ -139,6 +140,57 @@ jobs:
             *.cache-to=type=registry,ref=ghcr.io/${{ steps.string.outputs.lowercase }}/base:${{ hashFiles('core/base/Dockerfile','core/base/requirements-prod.txt') }},mode=max
             *.platform=${{ inputs.architecture }}
 
+## This job builds the base image. The base image is used by all other images.
+  build-base-image-arm:
+    name: Build base image
+    if: inputs.architecture != 'linux/amd64'
+    needs:
+      - targets
+    runs-on: self-hosted
+    permissions:
+     contents: read
+     packages: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: Retrieve global variables
+        shell: bash
+        run: |
+          echo "BRANCH=${{ inputs.branch }}" >> $GITHUB_ENV
+          echo "MAILU_VERSION=${{ inputs.mailu_version }}" >> $GITHUB_ENV
+          echo "PINNED_MAILU_VERSION=${{ inputs.pinned_mailu_version }}" >> $GITHUB_ENV
+          echo "DOCKER_ORG=${{ inputs.docker_org }}" >> $GITHUB_ENV
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - uses: crazy-max/ghaction-github-runtime@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Helper to convert docker org to lowercase
+        id: string
+        uses: ASzc/change-string-case-action@v2
+        with:
+          string: ${{ github.repository_owner }}
+      - name: Build all docker images
+        env:
+          DOCKER_ORG: ghcr.io/${{ steps.string.outputs.lowercase }}
+          MAILU_VERSION: ${{ env.MAILU_VERSION }}
+          PINNED_MAILU_VERSION: ${{ env.PINNED_MAILU_VERSION }}
+        uses: docker/bake-action@v2
+        with:
+          files: ${{env.HCL_FILE}}
+          targets: base
+          load: false
+          push: false
+          set: |
+            *.cache-from=type=registry,ref=ghcr.io/${{ steps.string.outputs.lowercase }}/base:${{ hashFiles('core/base/Dockerfile','core/base/requirements-prod.txt') }}-arm
+            *.cache-to=type=registry,ref=ghcr.io/${{ steps.string.outputs.lowercase }}/base:${{ hashFiles('core/base/Dockerfile','core/base/requirements-prod.txt') }}-arm,mode=max
+            *.platform=${{ inputs.architecture }}
+
 # This job builds all the images. The build cache is stored in the github actions cache.
 # In further jobs, this cache is used to quickly rebuild the images.
   build:
@@ -146,7 +198,7 @@ jobs:
     if: inputs.architecture == 'linux/amd64'
     needs:
       - targets
-      - build-base-image
+      - build-base-image-x64
     strategy:
       fail-fast: false
       matrix:
@@ -204,7 +256,7 @@ jobs:
     if: inputs.architecture != 'linux/amd64'
     needs:
       - targets
-      - build-base-image
+      - build-base-image-arm
     strategy:
       fail-fast: false
       matrix:
@@ -264,7 +316,6 @@ jobs:
      contents: read
      packages: read
     needs:
-      - targets
       - build
     strategy:
       fail-fast: false
@@ -319,7 +370,6 @@ jobs:
     if: inputs.deploy == 'true'
     runs-on: ubuntu-latest
     needs:
-      - build
       - tests
     strategy:
       fail-fast: false